I know that something went completely wrong:-((( It is part my fault because I did not check the repair shop recommendations thoroughly before I reqiested the change of the transmission oil. I complained a few times about the noise and they changed the filter too but was not of any help. I had never expected such lack of competence and basic skills:-(((( I am sure it will be hard to find information about hands on skills that auto repair technicians learn on day one on the job:-(((