Mister Transmission review: terrible! they don't stand behind their work!

I had them rebuild a manual transmission and new seals installed in a transfer case. Afterwards, the transmission failed and was bone dry inside.
On June 3, 2019 (Repair Order #52750) I had Mr. Transmission rebuild a manual transmission and have new seals installed in a transfer case of a 1991 Dodge Ram W350. They called a day or two later and said it was ready to go. They gave NO instructions or recommendations. They said "it was ready to go." Later after installing the two components in the truck and driving approximately 25 miles the transmission failed and I had to have it towed. Once I got it back, I then began to try and figure out what had happened. There were no signs of leaks nor was anything visually wrong. We checked the fluid level and determined it was to low in the transmission. So then removed the drain plug, and much to my surprise absolutely nothing came out. I then checked the transfer case and it was completely full of fluid just like it should be. It was very clear as to what had happened (or hadn't happened in this case). They never filled it with fluid at Mr. Transmission. I called to speak with them on 10/15/19 two days after the failure. First spoke with Chase and explained to him what had happened. Chase asked me "did I try putting fluid in it and trying it again?" I replied "no, I didn't want to because it was clearly damaged." He then said he would have Jerry (manager) call me back. After Jerry called and left a voicemail, I returned his call. I then explained exactly what happened and brought him up to speed on the whole ordeal. His reply was "we don't put any fluid in bench builds"... I said "How did the transfer case get filled with fluid?" He told me "I do not know"... I asked him "so your telling me that it magically appeared inside there?" He reiterated that they did not put in there... I then asked him how we were going to resolve this problem. Jerry's reply was "they weren't doing anything", and called me a smart a$$. I then told him I would get my attorney involved and get it resolved. He uttered something and hung up the phone. Obviously, Mr. Transmission forgot to add the transmission fluid, but somehow remembered to fill the transfer case. When you tell someone "it's ready to go" it should in fact be ready to go! All of this could have been avoided if there were instructions given at the time of delivery to fill both the transmission and the transfer case with fluid. Or even had the customer initial on the repair order that was to be completed by the customer.