Billdesk — Hdfc has not refunded

On 14 October 2022 i paid kv fees through billdesk but payment not received but amount deducted
on 20 October i mailed BillDesk they said
This is with reference to your email dated Oct 20, 2022 regarding the status of the mentioned payment .
We have checked the records and find that the payment vide transaction reference number YHD[protected] has been initiated for refund on 15.10.2022. It will take 3 to 5 working days from the date of refund to credit the amount in your account. Post the same, you can reconfirm the same from your bank statement
but the HDFC bank has not refund the amount