Peter England — Pathetic Service. Gift voucher amount redeemed but wasn't incorporated in final bill

Address:

City Center Gwalior

It's been two days since I have been struggling with issues regarding one of my orders at the Peter England store in Gwalior. I had a Rs 5000 coupon that I had given to the store billing assistant. On entering the coupon code the system showed Rs 5000 wala coupon amount but after redeeming the code the final bill amount remained the same. The guy at the billing counter tried to enter the coupon again but the system showed that the coupon amount had been redeemed. I am frustrated it's been two days and the Peter England support team is not providing any resolution. It's a display of pathetic customer support from ADITYA BIRLA GROUP. How can even after charging a hefty amount a brand like Peter England is so bad at customer support ??
The gift coupon that I provided is paid and I have paid for it. I need a resolution ASAP.