public HttpResponseMessage GetRewardGroupCustomers(int StoreId, int loginUserId, int reward_id)
 {
     try
     {
         var rewardGroupCustomers = _rewardService.GetRewardGroupCustomers(StoreId, loginUserId, reward_id);
         return(Request.CreateResponse(HttpStatusCode.OK, rewardGroupCustomers));
     }
     catch (Exception)
     {
         throw;
     }
 }