Translation of Aufgabenbereich

I hope you could understand my last letter to you. You see, when I write in Spanish I am not very confident. I always question myself and each and every sentence takes about fifteen minutes.
I tried to explain that I was preferring to eat with everybody together I that I preferred not to eat meat if they did not eat it either, for financial reasons. I thought that they understood my feelings.
He started to shout and to curse at my wife and me, but we did not give him additional money. I am convinced that he knew exactly that he did not take us to the original hotel but to a fake one.