Translation of instruct in Spanish

We felt a little dumb and waited for the hot water. The boiler seemed not to work and we started to become upset. We asked the technician to come once again and he admitted his mistake.
I have studied at the faculty of Engineering. Just tell me about your difficulties and I'll try to help you. I would really like to help you with learning English. Kind regards and speak to you soon.
We visited the Inca Ruins on the mountains near Pisac: A taxi took us to the top and we walked all the way back down to Pisac (which by the way is not an easy task on day 2 at this altitude)