Translation of ärgerlich

Although I put my wallet in the front pocket of my pants it was not there. I had been so diverted by the aggressiveness of these kids that I did not feel it when they grabbed it out of my pocket.
I almost forgot to tell you, that the water was brown, despite of its name... Anyway, as I was already close to my next destination I went and consulted with a tourguide of Austrian travelers.
On the second day we visited the Perito Moreno glacier by foot. It is one of the most beautiful glacier in South America and certainly the most visited, as it can be reached easily by car.