Reliance Fresh — Billing Price Does Not Comply With Offer Price

Address:

Laxmipuri, Kolhapur

I was billed with ₹59 per unit of Nandini Goodlife Toned Milk 1 Ltr Pack while the offer was for ₹57.

I have evidences of the price tags on the offer as well as bill.

While I requested to make it ₹57 by checking the offer I was told that 2 things:
1) The offer has changed
2) An offer changes anytime

I further requested to confront with the Supervisor, but he didn't turn up. Instead, he started shouting at the executive.

However, the issue remained unattended and unresolved.