Fleet Tire Truck & Auto Center Goodyear Good Year Front Break Diagnostic West Hollywood Florida

On 08/14/2018 I went to this place named Fleet Tire Truck & Auto Center, an Goodyear independent dealer and asked about to replace the front brakes for my car. The salesperson told me it was going to be $169. I accepted and waited for about two hours. Then a mechanic approached me and told me he has to install additional parts and the final const was going to be about $500. This amount is much the double of the initial proposal. I did not accept and was charged $47 of diagnostic. I was never informed of this charge and also the charge included $3.82 of miscellaneous parts? I paid the $47 but complaining and was not provided with the diagnostic receipt even that I paid.