Business ProfileforConyers Nissan

June 19, 2024, I had my car towed to Conyers Nissan & left it in the care of *******************, a service provider. ***** had the technician to remove my transmission, per my request, in an effort to replace it with one that I had purchased. The part that I purchased was defective & returned. I have another mechanic who was able to source the part & install the it. On Saturday, July 6, 2024, I conferred with ************************ mechanic that the original transmission did not have to be placed back into the car in order for it to be rollable. I specifically expressed that I did not want the old transmission put back into my car. On Monday, July 8, 2024, I spoke with ***** and specifically asked if the transmission was left out of the car and subframe reinstalled. He informed me that they went against my directives & placed the old part into my car without my *************** authorization. They made this decision on the assumption that I would hold them liable should anything happen to my car in transport. I informed them that they did not communicate and that they were not authorized to perform any work on my car without first speaking to me. Placing that part back into my car means that my mechanic will have to charge full labor price for the job at $1800 instead of the $950 that it would have taken if they had left the part. As a result, I will have to pay an additional $1000 in labor costs, plus $375 to Nissan for removing the transmission to begin with. Additionally, ***** & his supervisor ***********************, were not apologetic nor helpful regarding the matter. They have put me on hold & did not return to the phone, did not answer my calls, or let the phone ring. I have contacted the General Managers ***************************************** & am waiting on a call back. At this point, I have lost an additional week on my car repair. ***** admitted that they didn't contact me, but refused to document this on the notes section of the invoice.