public bool SendFree(Controller controller, SMS smsInput)
        {
            if (controller.ModelState.IsValid && !FreeSmsSession.IsLimit())
            {
                db.SMSes.Add(smsInput);
                db.SaveChanges();

                FreeSmsSession.IncrementSmsTotal();

                return(true);
            }
            else
            {
                return(false);
            }
        }