transmission rebuild

They rebuilt my transmission 3 years ago. It is not right and I expected to pay a strongly reduced price like cost of parts for a second rebuild 3 years later. $1900 for the first rebuild and $1700 for the second 3 years later? Not good enough. When I suggested that was not acceptable they said they would rework the price and patch it up. No confidence in that response. Rip off a girl. Never again. My tire guy who I LOVE recommended him but will no longer. I know that bad things can happen but I expected a better response. I should have gotten 100-140k and maybe got 30? :( unexpected for a small town business to not stand behind their work. I just talked to another friend of mine who said he only got 40,000 out of his transmission and he spent over 3k on his. he had added transmission coolers and everything that was recommended. So that is at least 2 people who are very dissatisfied with this place.