Letter of complaint

Dear Sir/Madam,

I am writing to complain about the service that I asked for at "Barcelo Hotels and Resort" three days ago.
I ended up there because of a recommendation from internet. Although I had an unexpected argument with part of the staff. I asked him if he could bring me a meal that was in the menu, so he kindly accepted.
However, while I was working in my room, the doorbell rang. It was the same employee to whom  I had  asked for my meal, but he was bringingsomething I did not ask. So I told him, and he started acting aggressively and not politely at all. I subtly requested for my dinner, so he came back with my order. But when I paid the residence, the bill said I had ordered two different meals the previous night and that is why I am writing this letter.
I am not giving a good review of this hotel unless the bellboy gives me an apology and the receptionist gives me back the money of the extra meal.
I look forward to hearing from you,
Yours faithfully,
Antonella Rocco (complete name)