Dynamic Transmission

I brought my 2007 Pacifica here, they had it a week, claimed to have rebuilt whole tranny with a warranty, I told them the car is sold, it will go to next owner, he said yes it's for new owner. I brought it back because it was shifting funny, he took it back, fixed it. Took it back again, reverse was vibrating really bad, he took it back again and claimed to have fixed it. I sold it to the new owner who couldn't drive for a month due to eye surgery, he called me 2 months later, he only drove it for 3 weeks, put only 150 miles on it, tranny stopped working, he needed a tow. He called dynamic, the owner starts yelling at him and told him the warranty was not transferable. This place is bad news, they lie, and can't fix anything right.