Firestone Overcharged for Parts and Services Garland Texas

My girlfriend's 2006 GMC Envoy would not shift into gear and she was left stranded at her workplace in Garland, Texas.  With little recourse, the went across the street to the local Firestone.  They graciously moved her vehicle to their repair center and determined the interlock cylenoid needed to be replaced.  They quoted her a price of $391, but after the questioned the charge they said they would split the labor and only charge her $40 labor but the part was a dealer only product and cost $284.  The Manager told her it would be almost 2 hours before the vehicle was ready because the only part available was at Stonebriar Chevrolet and they had to pick it up. 

Our knowing people at the Commerce Chevrolet dealership led us to question the cost of the part needed.  We were quoted $97.19 for the part they said needed to be replaced.  When she question the staff about the $284 price they quoted, they then said it was more for the assembly and not just the electrical component.  So once again the assembly was priced and it was $180.  When my girlfriend asked to see the invoice from Stonebriar Chevrolet, she was told there was not one provided by the dealership.  Who does not get a receipt?

Firestone adjusted the cost of the part, but then added on more charges than originally quoted.  They added an $80 diagnostic charge - a fee never charged if the shop makes the repairs for you.  She questioned this charge and was told this was done only by Firestone for every repair.  She was also charged $102 labor, not the $40 originally quoted.  Of course, the manager who quoted that was gone by this time. 

The District Manager will be contacted, but this is simply a case of rip-off-the-female-driver.  Avoid the place, they are crooked.