Billdesk — refund of payment

Address:

152002

I have filled my sbi clerk exam on 25 january 2020, but due to some error the payment was not accepted at first attempt. So as mentioned on that page to make another payment and my old payment will be sent back to my account within 2-3 working days i made another payment. But it's been a week i haven't received my money back. I made the first payment by sbi debit card which is to be reflected back. And second payment using google pay from uco bank account which was accepted. Please respond to this.