I hate reading reviews that are filled with all so...

I hate reading reviews that are filled with all sorts of drama so here are the facts.
Car was acting up, called in. Scheduled a 10:30 a.m. diagnostic. Was told the diagnostic was $75 on the phone.
This was just to diagnose the issue, not to work on the car.
Arrived. He had me sign a document stating the bill would be $105.
I asked about the $75, he acted confused as if, he had never heard of that number. $105 was there hourly rate.
I signed. I was never told how long it would take or ever given even a hint or suggestion at possible time frame.
I try to be patient, I know what its like to work in customer service.
After a while of waiting I got bored with sitting so I decided to walk around outside. Nice day.
Its 12 at this point. I round the corner and see my car still sitting behind shop. They hadn't even looked at it yet.
I asked the service center worker, what was up.
He assured me they were hurrying. He said, "I will call you when its ready." Implying, 'please don't ask again'

After hours of waiting, the sales staff, who had all noticed me being there all day, encouraged me to go "bug them" so they will hurry up.

I did so. My car had been sitting in the parking lot for at least an hour waiting. No one came to tell me.
The catalytic converter was bad.
Told me the spark plugs needed to be changed and so on. I changed the spark plugs 6 days prior.
Cant afford to fix cat converter, so I decide to just pay for the diagnostic and bail.
Final bill, he says, "After tax, that will be $120"
I do the math quick in my head. Doesn't add up.
He hands me the itemized bill. I see $10.50 for some "processing fee" or something like that.
I asked him, what that was about. He says something like it helps pay for the 'rags and forms' and things. Didn't really understand.
Went in thinking it was $75 left paying almost twice that.

I left at 5:15 PM.
I was there for almost 7 hours.

They were very respectful when they spoke to me. And we never became short or rude with each other.

In summary. Their objectives were clearly not to help me make a very bad situation better. And they were very good at the old 'nickel and dime'. They wasted my time, and wanted more of my money. I felt pretty bad. A little used. If you want to roll the dice about customer service and honest business practices go ahead. Otherwise, maybe go somewhere else.