public async Task <string> RedeemOneCardPin(string pinno, string comment, string requestPlatform, string platformSpecific)
        {
            var accountHolder = _accountHolderRepository.Single(p => p.UserId == AbpSession.UserId);

            var oneCardServiceClient = new EstelOneCardServicesClient();

            var config = _configuration.GetSection("OneCardProperties");

            var agentTransactionId = RandomStringGeneratorUtil.GenerateAgentTransactionId();

            var pinRedeemRequest = new PinRedeemRequest
            {
                pin          = "7F1359753577B274D717DC2E41BA1E51",
                agentcode    = "APEX_PINRDM",
                pinno        = pinno,
                agenttransid = agentTransactionId,
                serviceid    = PinRedeemServiceIds.SavingsTopUp,
                comments     = "just do it"
            };

            var pinRedeemResponse = await oneCardServiceClient.getPinRedeemAsync(pinRedeemRequest);

            var pinRedeemLog = new OneCardPinRedeemLog();

            try
            {
                //Log OneCardPinRedeem. Whether successful or not
                Logger.Info("About to prepare pin redeem log");
                pinRedeemLog.Amount             = decimal.Parse(string.IsNullOrEmpty(pinRedeemResponse.amount) ? decimal.Zero.ToString() : pinRedeemResponse.amount);
                pinRedeemLog.AccountHolder      = accountHolder;
                pinRedeemLog.Comments           = comment;
                pinRedeemLog.PinNo              = pinno;
                pinRedeemLog.SerialNo           = pinRedeemResponse.serialno;
                pinRedeemLog.ServiceId          = PinRedeemServiceIds.SavingsTopUp;
                pinRedeemLog.VendorCode         = pinRedeemResponse.vendorcode;
                pinRedeemLog.ProductCode        = pinRedeemResponse.productcode;
                pinRedeemLog.AgentTransactionId = agentTransactionId;
                pinRedeemLog.ResultCode         = pinRedeemResponse.resultcode;
                pinRedeemLog.ResultDescription  = pinRedeemResponse.resultdescription;

                pinRedeemLog = _pinRedeemLogRepository.Insert(pinRedeemLog);
                CurrentUnitOfWork.SaveChanges();
            }
            catch (Exception exc)
            {
                Logger.Error(exc.StackTrace);
                //Send an error log email to my inbox. For Monitoring.
            }

            if ("0".Trim().Equals(pinRedeemResponse.resultcode))
            {
                var pinAmount      = decimal.Parse(pinRedeemResponse.amount);
                var currentBalance = accountHolder.AvailableBalance + pinAmount;

                try
                {
                    //Update AccountHolders balance.
                    accountHolder.AvailableBalance = currentBalance;
                    _accountHolderRepository.Update(accountHolder);

                    //Log transaction
                    var transactionLog = new TransactionLog();
                    transactionLog.Amount = pinAmount;
                    transactionLog.BalanceAfterTransaction    = currentBalance;
                    transactionLog.AccountHolder              = accountHolder;
                    transactionLog.TransactionType            = TransactionLog.TransactionTypes.Credit;
                    transactionLog.TransactionService         = TransactionServiceNames.OneCardPinRedeem;
                    transactionLog.RequestOriginatingPlatform = requestPlatform;
                    transactionLog.PlatformSpecificDetail     = platformSpecific;
                    transactionLog.Description = comment ?? string.Empty;

                    transactionLog = _transactionLogRepository.Insert(transactionLog);

                    //Update OneCardPinRedeemLog with the successful transaction.
                    pinRedeemLog.TransactionLog = transactionLog;
                    _pinRedeemLogRepository.Update(pinRedeemLog);
                }
                catch (Exception exc)
                {
                    Logger.Error(exc.StackTrace);
                }

                //Send Sms Receipt
                //Send Email Receipt.
            }

            return(pinRedeemResponse.resultcode);
        }