Paytm Mobile Solutions — transaction failed and even after repeated complaint no action taken.

I made a transaction of 1400 on 16th dec through paytm. The amount was for neet registration. However immediately after paying the failed notification poped and got lapsed. However in the app it shows a successful payment. I was asked to pay again by neet for my registration, i spoke to paytm customer care and they told me that money will be refunded 2-4days. I made the payment twice for the same registration. However its been more than a month and i have lodged my complaint in indian overseas bank, paytm so many times but with no relief... Either iob, paytm or neet is responsible for this payment error. I am in no position to track the fault unless these paltform helps me. Please kindly check with the fault and give me my money back