//Request Format:
refund, order_id, amount, txn_number, crypt_type
//Sample Request:
refund,order_7_testing,14.00,5561-0_10,1
//Response Format:
ReceiptId, ReferenceNum, ResponseCode, ISO, AuthCode, TransTime, TransDate, TransType, Complete, Message, TransAmount, CardType, TxnNumber, TimedOut, BankTotals, Ticket
//Sample Response:
order_7_testing,660144080011542100,027,01,001994,09:48:57,2016-07-02,04,true,APPROVED * =,14.00,V,5565-1_10,false,,null