Quick Advice Needed when dealing with a mechanic

Okay guys here is the result. My mechanic looked at the Saturn. The repairs by the dealership were done correctly as far as installing the waterpump and timing belt. My hoses were ALL GOOD.

Here’s the problem. The dealership called me and asked me to replace the pulleys(aka tensioners). The car has 3 of them. They replaced two according to my mechanic but left the hardest one to replace alone. This old pulley is what seized up.

$600 to repair at my mechanic. Saturn won’t reimburse me if I don’t take the car to them even if I show them the old pulley. I’m fine with that…but they won’t even offer to tow the car to them. So I have to tow my car twice…ANNOYING.