HDFC Bank — Not refund my money on time.

Address:

Pune, Maharashtra, 411014

I have complaint number 1240772.
I have received sms from HDFC bank on 21st - 900 Rs has been refunded/credit to your card. But i am not receive 900 Rs yet.. please refund my Money 900 Rs ASAP.
kindly take action.

Also i am trying to call customer service HDFC but they are also asking multiple questions. and not responding correctly or not solving the my query.

Thank you.