I took my 3500 in for a rear pinion seal leak in J...

I took my 3500 in for a rear pinion seal leak in January, and they replaced it. Also tried to up-sale a lot, (but didn t even mention my coolant or transmission leak or any work that can be done to fix it).
Then it began leaking worse than before 2,000miles/4 months later. Took it back in and they warrantied the parts and labor. This time they just tried to sell an air filter on top of the work being done, and mentioned my fluids were low. Again no mention on fixing the leak issues.