I believe you should have a written contract of work to be done. That way there is no false pretences at time of bill. I never seen any of the work that was done to my vehicle. I did get shown what was to be done. Now, five weeks later, there seems to be no problems with the work that was done. The torque converter and transmission seem to be working good. You did get the work completed on time as I asked to get it done asap.