First, thank you for the input, we always appreciate and care what customers think. And we are sorry you feel that way. With diagnosis it is sometimes difficult to resolve all problems when there is limited information. On the original visit we only retrieved oxygen sensor codes and there were no other codes at the time. We did verify that the oxygen sensors were indeed bad as one was not working at all and the other had a wire sliced from an exhaust shield as you may recall. We replaced those along with the other window and glass repair and it performed well on the test drives. When you returned the codes stored in the system were totally different and a much larger repair, that was declined. Codes and problems can arise at any given time for a multiple of different reasons. You were not happy and as discussed, were looking for some kind of fix and asked for a tune up. You were advised that the tune up would not help or address the problem at hand but we agreed to perform that service ($400.00 value) for no charge per your request. We still would like to help you resolve your problem. You can contact us anytime.