public List <BillModel> WhoOwesMe(string phoneNumber) { var b = _billsRepository.GetBillModels(); var list = new List <BillModel>(); foreach (BillModel bb in b) { var bill = _billsRepository.GetGroupBill(bb.IdBill); if (bill.AdminPhoneNumber == phoneNumber && bb.Payed == 0) { list.Add(bb); } } return(list); }