I had a shawarma with a piece of glass in it. After spitting it out and putting on the plate. It was 100% glass, the waitress confirmed and got the owner. When the owner came, he blamed us because he said that it was impossible for a piece of glass (like a nicked drinking glass shard) could get in there and we shouldn't blame him.
We were never offered a replacement shawarma (even though the one with glass wasn't finished) and were left with the impression that we placed the glass there ourselves.
If you like glass in your food and then be treated rudely for it, come here!!!