Parle — Complaint on a serious health issue

So in the '10 rupee hide and seek' biscuit pack which i was eating' had a abnormal taste. and i later found that it was due to the plastic tray in which it comes. found the smell of the plastic tray matching with that odd taste in the biscuit(So i think it to be that the plastic is getting into the biscuit). Kindly find a way to omit the plastic tray or dont sell the ten rupee variant. I might raise a complaint to fssai if the issue is not looked upon immediately.