public static function DataUsage($account_id)
 {
     $usage = Jsubs::where('account_id', '=', $account_id)->get()->first();
     if (count($usage) != 0) {
         $plan = $usage->plan;
         $total_usage = PlanChangeDetail::data_usage_in_gb($usage->bytes_total);
         return array("plan" => $plan, "usage" => $usage, "total_usage" => $total_usage);
     } else {
         $plan = 0;
         $total_usage = 0;
         return array("plan" => $plan, "usage" => $usage, "total_usage" => $total_usage);
     }
 }