Domino's Pizza — uninitiated refund

Dear Sir/Ma'am,

I ordered pizza from Domino's Pizza in Trivandrum on 12th April 2020. But after the order got placed they informed me on call that they don't deliver in the area I entered, so I cancelled the order. Then and there I received a message that the refund has initiated and I would receive the amount within 3-5 business days, but I didn't receive the refund. After 8 days I contacted Domino's about the same, they told me that they've sent the refund and now it's the bank's problem. They sent me a screenshot of refund sent from their side through Paytm gate, but I made payment through SBI debit card. Today it's 30th April 2020 and I haven't received the amount back.

Details of transaction:
Purchase amount- Rs.1061
Date of payment- 12th April 2020
Transaction ID[protected]