aamco No good.. customer service is horrible Brooklyn New York

 Plain and simple.. I took my 2007 Chevy impala there June 5th 2015 at 730 am.. I arrived at the aamco at 754 am.. which I was the second customer there.. The aamco opens at 8 am.. it is now 7 15pm and I have yet to hear a word about what is wrong with my car.. I got there told the mechanic I was hearing a noise he then checked it and said he needs to be put on the machine for deeper testing and if I want to leave the car I could he would take the car onto the bay in 20 mins.. so I then told him I would leave and he could call me and tell me what's wrong.. still no word.. I called 3 times 1st two times I was told my car was next in line 3rd time I was told they need permission to do a deep diagnostic test and it would be about 2 hours b4 they knew anything and that was at 1pm... now the timeline.. I reached at 754am left the car at 843am called 1 130 am called again 1225 pm and then 145 pm.. now it is 7pm and they are closed and I still don't know what's wrong with my car nor did they call me to tell me they needed to keep my car overnight.. so not only am I stuck without a car and don't know what's wrong but now I have to pay 142 dollars for a diagnostic test and I still don't know whats wrong with my car.. nor do I have my car..