Flies and sushi chef cutting finger nails

I was having lunch at the sushi bar when I noticed that flies were sitting in the cutting utensils and uncovered tempura prawns. The sushi chef was standing at the place where he prepares the food and was cutting his finger nails with a pair of scissors. He then put the scissors back in a cupboard without washing it. None of the staff tried to chase the flies or wash the utensils that the flies sat on. We left the restaurant as we were put off from eating further.