Vishal Mega Mart — Charge us extra money from Mrp

Address:

Vishal mega mart Rajouri Garden J1/162 B

Today 16th March 2021, we went to vishal mega mart Rajouri Garden, J1/162 B at 5:47 pm, counter no[protected]Kamer Chand).
We purchased household products while billing items were counted and count of items were listed in the bill was correct but we purchased Stay Free Mrp of Rs.220 (1 item) which cost us Rs.600 in bill and we have paid it. After coming back to home we calculate it and observed that they charged us Rs. 380 extra on that product. We don't understand why the single product of Rs. 220 charges us Rs.600. We want the extra money charged from us should be refund. NEELAM [protected]