6 to 6 Auto Service

Went in for a repair to come out with more repair issues.
On *** we called 6 to 6 auto services in regards to getting the rear u-joint replaced in my *** as we were not from the area and was pulling a horse trailer. 6 to 6 Auto had informed me that my rear u-joint was not bad and that it was my carrier baring because there was flex in the drive shaft. Trusting their word, we proceeded with fixing with what they believed to be the problem. After fixing what they claimed to be the problem they then proceeded to tell us that the rear u-joint was bad and needed to be replaced as well. After all was said and done they test drove it and told us that it had a really bad vibration while driving and that it had nothing to do with the driveline and was a suspension issue but we would make it home. My truck didn't have a vibration prior to this fix but they said we would make it home and I wanted to wait and have the truck looked at back home. Returning home I took my *** to *** in ***. They claim that their is always a flex in the driveshaft by the carrier baring as 6 to 6 Auto told us that's why it needed to be replaced. *** reported that the drive shaft was not lined up when put back in and the yolk had been bent which they advise the whole drive shaft be replaced. In addition to the yolk being bent, this cause the rear u-joint to not function properly needing a whole new one. The rear u-joint was also missing a snap ring.