Request some help

Ok 2 different shops. First issue from 3/19 post, I was driving on the freeway and the car stopped shifting. I took it to Aamco because I was on work comp and had limited income, they replaced the spring on the valve body side of the transmission, they also for some reason removed the kickdown linkage spring assembly.

I drove the car for a few days, took it back to Aamco told them something was wrong, shifting really high 2nd to 3rd at 55-60mph under casual conditions and was slapping into gear. They said they "adjusted it" 3 weeks later I came back to Aamco again, and told them same issues, spoke with the transmission repair from Aamco, which is when he told me he removed the linkage spring cause it didn't look someone else's car mopar that was in the their shop. I came back again, now 3 moths and 1800 miles later, They told me they weren't equip to fix my problem and that I should take it to another shop. So I saved up some cash, and took it to a friends performance shop, and he said I need to have the transmission rebuilt, so I took it to a different transmission shop , and they pulled the pan where we found the band and part of a clutch sitting in the pan. That shop rebuilt it and added a shift kit, it has been perfect since. I am suing Aamco for failing to perform a proper repair, and for causing increased damage to my transmission by removing the kickdown.

Based on the full description, am I correct in assuming the removal of the kickdown caused my transmission to fail.