Our day came to an end and Samu brought us back to the hotel. We agreed to take a ride with him one more time and that was on the way to the airport. We took his cellphone number just in case.
The name of the agency was Handspan and they were the first ones in the country that worked under ISO 9001:2000 quality management. That was pretty convincing especially after our horrible experience the day earlier.
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) | 
