Pantaloons Fashion & Retail — charged for carry bag

Address:

22 Camac street block b 2nd floor Kolkata, Kolkata, West Bengal, 700016

I have purchased two pair of jeans from pantaloon when I went to the cashier for billing he asked me weather I need bag or not and said it will charge me ₹ 7 for the carry bag even after telling him about the case on bata for₹ 3 they have paid ₹9000 still say we don't know about that sir our company is taking money from the bag. Do not know why even knowing the case on bata carry bag some of the company are taking money for carry bag.
Hope to get a justice for it providing you the snapshot of the bill.