well they are blowing me off saying these 1/2+ inch pieces of a thin plastic like material that I couldn't chew or pull apart by hand are 'unpalatable' rather than 'inedible'. They are keeping the same supplier and continuing to serve this ground beef to their customers and say they haven't received any other complaints about it.

They are not offering any more than their initial refund of the meal itself.

I won't be ordering anymore from this company and am debating the next step, if any. I asked them to keep the material pieces I found in my meatballs as evidence in case anyone wants to look at it in the future.