The service is very slow!!
I’m very sorry. madam. I’m afraid we are short-staffed tonight.I’ll see to it personally that you are served as soon as possible.
My soup spoon is missing
Accept my apologies, madam.I’ll bring you one immediately.
The waiter is so rude, he isn’t polite at all. I want to speak to the Head waiter!
The Head Waiter will come in a moment./I’ll ask him/her to come