Morestore — oil packet voucher scamming issue

Address:

100 ft ring road , Vizianagaram, Andhra pradesh, Vizianagaram, Andhra Pradesh, 535002

Its been my mom purchasing oleev active oil from more store located in ting road vizianagaram ap. The reason i purchase is its good oil and gives rs.185/- voucher of book my show movie tickets, like it has a scratch code on a sticker place to it on oil packet. Always it has been scratched and the code is used by somebody, when we try to use it its useless, and we costumer always have a loss of this voucher which is worth 185/-.
May this be done by your own helpers or the other costumer, but it is ultimate loss to the person who purchases by somehow.

Please resolve this immediately with a quick action and get my voucher back or money or i can simply file a consumer case on the store.