Toyota Of Gastonia

I took my 2008 Toyota Avalon to the dealership in Gastonia NC due to a check engine light and after inspection they said my timing gear was bad. The car only had about 44,000 miles on the engine and when I asked how much they told me a repair range of $1,600.00-$3,500.00. My extended warranty company (GWC) refused to pay but $1,600.00 as Toyota had to re-design the timing gear rendering the older relative components useless.My car stayed on the mechanics rack for over two weeks as I disputed with the dealership and GWC. In any event I walked into the shop weeks later to see how things were progressing during this time where a white mechanic was pissed at the car situation stating he hated working on my car and to go talk to the service advisor. I told Scott (the advisor) of his anger and that I did not want him working on my car but he insisted.Finally after nearly three weeks things seemed to be resolved and when I picked up the car smelled a strong oil smell emanating from the engine compartment and the car's wheels were out of balance. I immediately called the dealership back asking for another appointment as there has NEVER been any oil odor from this car. They inspected it but claimed they could find nothing but a steering column leak which was another $800.00 to repair. I took the car in and they replaced the column and damaged the steering pastic and the wheels are again out of balance. This same mechanic magically found the leak that never was there before he took my engine apart and and it seems that a seal is punctured which is an additional $1,900.00 repair. I suspect that this master mechanic sabotaged my car as his rack was tied up for weeks costing him money. My car kept coming home with problems that never existed before costing me time and money coinciding with having to rent a vehicle! I told the service manager and his service advisor in a meeting that they need to resolve this matter but, they refused to.