Swiggy — refund for the lost money

I had ordered food from a particular restaurant and paid for it using my debit card. The amount was debited but swiggy says payment not completed and i m waiting since 1 week there is no refund the message said any amount if debited shall be refunded within 3 -7days. I went to the bank and checked the account details there was no refund. Very disappointed by swiggy s service. Had expected much more. Playing with customers money. Not a good business.