bugs at sushi place

well... my husband and a friend went to eat at our local sushi place...its ok.. not bad but not great either. for us sushi lovers its all we have. While they had their food and started eating, 2 ladies had just sat down at their table and their screamed a very high pitch scream and got up quickly and out the door they went. Funny thing about this is that everyone looked but no one else cared to know WHAT IT WAS. I MEAN REALLY???? i don't like to share my food with bugs. he said it had to have been a roach or even a mouse.. thats how bad the scream was. The waitress did follow them outside to see what the problem was, but he still doesn't know. He could hardly finish his meal. and kept looking around for bugs. Interesting how NO ONE seemed to mind that this happened.. oooohhh gross.. hence the reason i rarely eat out.