Reliance Mart — dry edibles , tadka day & puffed rice full of insects and old stock

Address:

Kanika road, 753008

Here in Reliance Mart, Kanika Road in Cuttack they are selling dry food old stock full of insects and fungus by changing the date label. Many other food products like milk and dahi are also old stock with expired date or date is tampered .
How do I return and get back my money as can't rely on exchanges. There should be policy of money refund if fault on your side
Dr. Surajit Sahu