Big Bazaar / Futurebazaar / Future Retail / Hometown — about wraps on mfg date and expiry date on lotte choco pie

Address: Big bazaar deoghar, Deoghar, Jharkhand, 814112

I am a regular buyer of big bazaar deoghar.many times I became a victim o[censored]sing such a product in which it is not possible to check the expiry date of the product.last Saturday I once again purchased some goods amount 4694 (four thousand six hundred ninety four)inhich I bought a pack of Lotte Choco Pie worth 120.At home I found a big wrap on the product for discount at the place of mfg and expiry date.when I tried to unwrap the product it has become impossible to read the expiry date.it seems that they intentionally put the wraps on the expiry date.when I visited the place for knowing the mfg date and expiry date of the product so that I can use that product they do not pay attention to my problem in such situation I have become totally helpless.it is the right of the consumer to know the mfg and expiry date of the product.How can I know now?? And what can I do now?? Please help me