Zomato — refund of transaction error

Dear sir/madam would like to put a complain against zomato, we had food at a restaurant on 17th july 2020 and the bill was aed 48.37 but accidentally due to smart phone aed 448.37 was paid, we informed zomato help line and they suggested to pay again correct amount so the original would be refunded so we again paid aed 48.37 and waiting for our refund from past 9 days and zomato says it has refunded but bank says they have not done so, we are asking for proof from zomato but in vain.

We need our money back from zomato, and we are zomato gold members.

I can provide any supportings required for the same which is already submitted to zomato. Kindly help