diff --git a/modules/scylladb/helper.go b/modules/scylladb/helper.go
index 6d6e4d2..543dde8 100644
--- a/modules/scylladb/helper.go
+++ b/modules/scylladb/helper.go
@@ -13,7 +13,7 @@ func TableCleaner() {
 	desiredTime := time.Date(currentTime.Year(), currentTime.Month(), currentTime.Day()+1, 3, 0, 0, 0, currentTime.Location())
 	duration := desiredTime.Sub(currentTime)
 
-	time.Sleep(duration)
+	// handling expired userSignUpProcesses
 
 	var userSignUpProcesses []dbstructs.UserSignUpProcess
 
@@ -22,10 +22,10 @@ func TableCleaner() {
 		return
 	}
 
-	var expiredUserSignUpProcesses []dbstructs.UserSignUpProcess
-
 	currentTimeUnix := time.Now().Unix()
 
+	var expiredUserSignUpProcesses []dbstructs.UserSignUpProcess
+
 	for _, us := range userSignUpProcesses {
 		if us.ExpiresAt < currentTimeUnix {
 			expiredUserSignUpProcesses = append(expiredUserSignUpProcesses, us)
@@ -47,6 +47,42 @@ func TableCleaner() {
 		}
 	}
 
+	// handling reserved account names
+
+	var users []dbstructs.User
+
+	if err := Session.Query(gocnjhelper.DbMUsers.SelectAll()).SelectRelease(&users); err != nil {
+		gocnjhelper.LogErrorf("Failed to select users, err: %s", err.Error())
+		return
+	}
+
+	var updatingUsers []dbstructs.User
+
+	accountNameReservingTime := currentTime.Add(-7 * 24 * time.Hour).Unix()
+
+	for _, u := range users {
+		if u.LastAccountNameLc != "" && u.AccountNameUpdatedAt < accountNameReservingTime {
+			updatingUsers = append(updatingUsers, u)
+		}
+	}
+
+	if len(updatingUsers) > 0 {
+		batch := Session.NewBatch(gocql.UnloggedBatch)
+
+		q := "UPDATE " + Cluster.Keyspace + "." + gocnjhelper.DbMUsers.Name() + " SET last_account_name_lc='' WHERE id = ?"
+
+		for _, us := range updatingUsers {
+			batch.Query(q, us.Id)
+		}
+
+		if err := Session.ExecuteBatch(batch); err != nil {
+			gocnjhelper.LogErrorf("Failed to execute batch, err:", err.Error())
+			return
+		}
+	}
+
+	time.Sleep(duration)
+
 	// restart timer
 	go TableCleaner()
 }