5 Answers

Check the distributors name on the packet and call their customer service number,you can lodge a complaint with them.

My first thought is he probably didn't pay very much for the chips and it's not worth making a big deal out of it.  There is usually a telephone number on the back of the bag of chips so the consumer can contact the company with comments.
YOU, on the other hand, need to work on your written communication skills.   

        Did he like the chips?

If he did, then tell him to stick a fork

and steak knife in it and  shut his mouth!!!

Great Value is a Walmart brand. He only needs to return them to Walmart. They will credit him the money spent. No big deal. I bought beer battered onion ring flavored potato chips made by Lays one time. They were gross and did not taste like beer battered onion rings. I called Lays and complained. They sent me 3 coupons for a free (any of their products up to $4.99). 

Wow....I'm absolutely disgusted and dismayed by such a serious offence!  I hope that your brother-in-law will hire the best criminal attorney that he can find.  Hopefully, that "false advertiser" will spend the rest of his life, locked up!  We don't need that kind of bad behavior in our society. Your brother-in-law needs some counselling as well, as he probably (now) suffers from various types of mental distress. Good luck to both of you.

Colleen

:)