VEGETERIAN BURGER WITH PRAWN WHISKERS

Went to Galleria Circus Circus and experienced the worse thing ever. My husband and I are vegetarians by religion so when the incident occurred I was very upset. We ordered a vegetarian burger which took 30 minutes to make its way to the table which is surprising as the restaurant was empty. When I cut into the burger I saw something weird looking. We called the manager and he said it was a prawn whisker which I was so disgusted at. We than asked him if the vegetarian burgers are grilled with the meat and he answered yes. He couldn't even give us a reason as to why they do this. Worst part was that the prawn whisker was inside the patty which can only mean they were touching the prawns whilst making the burgers. This is so unhygienic. I feel they should keep the veg food separate to the meat. It's not fair on us vegetarians. I will never go back there and will definitely tell many others not to. The manger wasn't very nice about the situation as well. We just left