Woolworths yoghurts can contain pieces of plastic. Be careful

My kid was eating one of the woolies yoghurts. We opted for the woolies range as they pride themselves on good quality. Except in this instance he broke a tooth. Break a tooth from yoghurt?

That doesnt seem right! Correct, it sure as hell does not. There was a massive piece of black plastic in the yoghurt. I took photos of it. Not sure why woolies would be putting strawberry yoghurt with pieces of plastic in the shelves.