HDFC Bank — refund not credited

I asked for a refund from payumoney which was initiated on 6 november and i got the confirmation mail for the same.
Payment id :[protected]
The refund proceess usually takes 3-5 working days. However, the amount is still not credited to my bank account.
When i contacted payumoney again, they provided me with an arn number
74678447311000002736091. Am not getting any response from the bank end.
My hdfc customer id:62742440