Aamco transmission Gainesville, Florida

I was quoted 3 different prices for repairs as well as my nephew as well as a family friend
just because i didn't know that when i was walking out of the and was asked he last 4 digits of  my social i was being setup as a victim of circumstance because i didn't know by doing that i was giving permission for a repair the estimation was suppose to be free little didi know it was/is going cost me $500.00 i went back in tryin o reason with Mike and was told if i call the police because that was my intention after telling him i felt mislead and he told me to call and he would show them my signature which was on the free estimate but he said because i gave him my social i was liable even though i wasn't aware that was the reason he ask for it with me walking out the door. is this fair pracice just to make money!!!!!!!!!!!!!!!!!!!!!! i even offered to meet him halfway and pay half and even then he wasn't reasonable so I ask again is this how you trick customers by asking for their social and lock them into a repair!!!!!!!!!!!!!!!!