Broken glass in food

Bought peppermit crisp tart and my wife and myself each found broken glass. I returned and they did refund me. I was also told I can get something complimentary from the shop. They have not given me any amount or idea what I can get. It's actually about more than that. It's borderline attempted ****** feading glass to someone. People **** dogs with glass in food. If it cuts your intestines one will have severe repercussions.