Paytm Mobile Solutions — Refund of cash to my bank account is not done for 2 weeks

Address:	600078
Website:	paytm.com

Hello sir/mam, i did a transaction from paytm to my bank on 21/12/2016. But still i have not received the cash from paytm they asked for a letter from the bank if the cash is not refunded i got a written mail from my bank manager and mailed to the officer but still they have not responded.
the paytm transaction against order id-[protected] amount INR-800 is not refunded to my bank account.But they claim that they have refunded the cash and say that my bank gave a reference no ARN Number-74766516356650019826128. But my bank says that they have not CREDITED the cash.