Tour agencies to Salar de Uyuni NOT recommended

At the end of June, my partner and I took the tour 4 days / 3 nights from Uyuni and had a bad experience with Mammut Expedition and then Hurricane Expeditions. Among many other turds and bundled, the first, run by Rosemary, made ​​it back to Uyuni (a city where you do not want to stay more than one night) during the second night we had to sleep in San Juan, so we left the tour. They did not meet schedules agreed at the office; and finally they joined us with a tour company Hurricane expeditions, which at the last moment changed and put one young guide who did not explain anything. We do not recommend either of the two companies if you want to travel without worry or inconvenience.