I came only for an oil change, but they messed up my A/C.
They casually admitted to getting debris in the AC fan, so that my AC now makes a terrible humming noise like cards in spokes of a bicycle. They offered to vacuum it, but when they couldn't get it right, they gave up and told me I would just have to deal with the noise.
I get the "upsell thing" and I can ignore it well enough, but they shouldn't take out all the parts just for show if they don't have the mechanical skills to remove/replace them properly, especially if they don't have a care to fix the things they break, which they don't.
I called the Zone Manager and left a message, but he never called me back.
Expect terrible service here.