diff --git a/repository/mysql/kind_box/kind_box.go b/repository/mysql/kind_box/kind_box.go
index d147645..ee077d3 100644
--- a/repository/mysql/kind_box/kind_box.go
+++ b/repository/mysql/kind_box/kind_box.go
@@ -4,64 +4,25 @@ import (
 	"context"
 
 	"git.gocasts.ir/ebhomengo/niki/entity"
-	"git.gocasts.ir/ebhomengo/niki/logger"
 	errmsg "git.gocasts.ir/ebhomengo/niki/pkg/err_msg"
 	richerror "git.gocasts.ir/ebhomengo/niki/pkg/rich_error"
 )
 
 func (d DB) AddBatchKindBox(ctx context.Context, kindBoxes []entity.KindBox) error {
 	const op = "mysqlkindbox.AddBatchKindBoxConcurrentlyRollback"
-	errCh := make(chan error, len(kindBoxes))
-	resultCh := make(chan entity.KindBox, len(kindBoxes))
-	tx, tErr := d.conn.Conn().Begin()
-	if tErr != nil {
-		return richerror.New(op).WithErr(tErr).
-			WithMessage(errmsg.ErrorMsgSomethingWentWrong).WithKind(richerror.KindUnexpected)
+
+	queryStr := "INSERT INTO kind_boxes (kind_box_req_id, benefactor_id, type, serial_number, status) VALUES "
+	values := []any{}
+
+	for _, kb := range kindBoxes {
+		queryStr += "(?, ?, ?, ?, ?),"
+		values = append(values, kb.KindBoxReqID, kb.BenefactorID, kb.Type, kb.SerialNumber, kb.Status.String())
 	}
 
-	for _, kindBox := range kindBoxes {
-		go func(kb entity.KindBox) {
-			_, err := tx.ExecContext(ctx,
-				"insert into kind_boxes (kind_box_req_id, benefactor_id, type, serial_number, status) values (?, ?, ?, ?, ?);",
-				kb.KindBoxReqID, kb.BenefactorID, kb.Type.String(), kb.SerialNumber, kb.Status.String(),
-			)
-			if err != nil {
-				errCh <- richerror.New(op).WithErr(err).
-					WithMessage(errmsg.ErrorMsgSomethingWentWrong).WithKind(richerror.KindUnexpected)
-
-				return
-			}
-
-			resultCh <- kb
-			errCh <- nil
-		}(kindBox)
-	}
-
-	for i := 0; i < len(kindBoxes); i++ {
-		select {
-		case err := <-errCh:
-			if err != nil {
-				if err := tx.Rollback(); err != nil {
-					logger.L().Error("Rollback error: ", err)
-				}
-
-				return err
-			}
-		case <-resultCh:
-
-		case <-ctx.Done():
-			if err := tx.Rollback(); err != nil {
-				logger.L().Error("Rollback error: ", err)
-			}
-
-			return richerror.New(op).WithErr(ctx.Err()).
-				WithMessage(errmsg.ErrorMsgSomethingWentWrong).WithKind(richerror.KindUnexpected)
-		}
-	}
-
-	if err := tx.Commit(); err != nil {
-		logger.L().Error("Commit error: ", err)
+	// trim the last ,
+	queryStr = queryStr[0 : len(queryStr)-1]
 
+	if _, err := d.conn.Conn().ExecContext(ctx, queryStr, values...); err != nil {
 		return richerror.New(op).WithErr(err).
 			WithMessage(errmsg.ErrorMsgSomethingWentWrong).WithKind(richerror.KindUnexpected)
 	}
diff --git a/repository/mysql/kind_box_req/kind_box_req.go b/repository/mysql/kind_box_req/kind_box_req.go
index 7605809..823d3c4 100644
--- a/repository/mysql/kind_box_req/kind_box_req.go
+++ b/repository/mysql/kind_box_req/kind_box_req.go
@@ -28,27 +28,14 @@ func (d DB) AddKindBoxReq(ctx context.Context, kindBoxReq entity.KindBoxReq) (en
 	return kindBoxReq, nil
 }
 
-func (d DB) AcceptKindBoxReq(ctx context.Context, kindBoxReqID, countAccepted uint) (finalErr error) {
+func (d DB) AcceptKindBoxReq(ctx context.Context, kindBoxReqID, countAccepted uint) error {
 	op := richerror.Op("mysqlkindboxreq.AcceptKindBoxReq")
-	statement, err := d.conn.Conn().
-		Prepare(`update kind_box_reqs set count_accepted = ? , status = ? where id = ?`)
-
-	defer func() {
-		cErr := statement.Close()
-		if cErr != nil {
-			finalErr = cErr
-		}
-	}()
-
+	_, err := d.conn.Conn().ExecContext(ctx, `update kind_box_reqs set count_accepted = ? , status = ? where id = ?`,
+		countAccepted, entity.KindBoxReqAcceptedStatus.String(), kindBoxReqID)
 	if err != nil {
 		return richerror.New(op).WithErr(err).
 			WithMessage(errmsg.ErrorMsgSomethingWentWrong).WithKind(richerror.KindUnexpected)
 	}
-	_, eErr := statement.ExecContext(ctx, countAccepted, entity.KindBoxReqAcceptedStatus.String(), kindBoxReqID)
-	if eErr != nil {
-		return richerror.New(op).WithErr(eErr).
-			WithMessage(errmsg.ErrorMsgSomethingWentWrong).WithKind(richerror.KindUnexpected)
-	}
 
 	return nil
 }
@@ -81,48 +68,25 @@ func (d DB) KindBoxRequestExist(id uint) (bool, error) {
 	return true, nil
 }
 
-func (d DB) RejectKindBoxReq(ctx context.Context, kindBoxReqID uint, description string) (finalErr error) {
+func (d DB) RejectKindBoxReq(ctx context.Context, kindBoxReqID uint, description string) error {
 	op := richerror.Op("mysqlkindboxreq.RejectKindBoxReq")
-	statement, err := d.conn.Conn().
-		Prepare(`update kind_box_reqs set description = ? , status = ? where id = ?`)
-	defer func() {
-		cErr := statement.Close()
-		if cErr != nil {
-			finalErr = cErr
-		}
-	}()
+	_, err := d.conn.Conn().ExecContext(ctx, `update kind_box_reqs set description = ? , status = ? where id = ?`,
+		description, entity.KindBoxReqRejectedStatus.String(), kindBoxReqID)
 	if err != nil {
 		return richerror.New(op).WithErr(err).
 			WithMessage(errmsg.ErrorMsgSomethingWentWrong).WithKind(richerror.KindUnexpected)
 	}
-	_, eErr := statement.ExecContext(ctx, description, entity.KindBoxReqRejectedStatus.String(), kindBoxReqID)
-	if eErr != nil {
-		return richerror.New(op).WithErr(eErr).
-			WithMessage(errmsg.ErrorMsgSomethingWentWrong).WithKind(richerror.KindUnexpected)
-	}
 
 	return nil
 }
 
-func (d DB) RollbackKindBoxRequestStatus(ctx context.Context, id uint) (finalErr error) {
+func (d DB) RollbackKindBoxRequestStatus(ctx context.Context, id uint) error {
 	op := richerror.Op("mysqlkindboxreq.RollbackKindBoxRequestStatus")
-	statement, err := d.conn.Conn().
-		Prepare(`update kind_box_reqs set status = ? where id = ?`)
-	defer func() {
-		cErr := statement.Close()
-		if cErr != nil {
-			finalErr = cErr
-		}
-	}()
+	_, err := d.conn.Conn().ExecContext(ctx, `update kind_box_reqs set status = ? where id = ?`, entity.KindBoxReqPendingStatus.String(), id)
 	if err != nil {
 		return richerror.New(op).WithErr(err).
 			WithMessage(errmsg.ErrorMsgSomethingWentWrong).WithKind(richerror.KindUnexpected)
 	}
-	_, eErr := statement.ExecContext(ctx, entity.KindBoxReqPendingStatus.String(), id)
-	if eErr != nil {
-		return richerror.New(op).WithErr(eErr).
-			WithMessage(errmsg.ErrorMsgSomethingWentWrong).WithKind(richerror.KindUnexpected)
-	}
 
 	return nil
 }