KFC India — kfc voucher of 500 applied. the order / transaction failed, balance deducted and order not delivered

The Coupon originally had a balance of INR 500 /-
Once the order was failed the balance remaining is 18 INR
The store denied me the order as it was NOT SUCCESSFULLY Placed

KFC/not the store is denied help and asked me to contact the device provider for the same

The Coupon was tried on the app and not at the Store at
https://online.kfc.co.in/