Subway — money debited twice for single purchase not refunded

Address:

Mindspace Airoli (W), Mumbai City, Maharashtra

I had ordered subway chicken salad on 22nd March 2019 and when the manager of subway store swiped for first time, money got deducted from my account but he said transaction was reversed and money is not credited in his account but there was no error message such as transaction failed
I still didn't get refund and it's past 24 hrs as I spoke to the owner he re ensured me that he will take bank statement and check whether amount got credited in his account or not.
I got a reply via mail through manager that I should go to my bank whereas there was no network problem from my banks side.
Store name: Airoli Mindspace Mumbai store number Subway#66333-0