AutoNation Chrysler Dodge Jeep Ram Carlsbad

I went in for a service and was quoted $2500 to do 30,000 service. Insane price! This did not include the free oil change and tire rotation I pre-paid for when I leased my Jeep. I asked the serviceman to do the bare minimum and push out what could be pushed out. I realized he charged me the same after I left ($2500). 40min later, I texted him to pause everything. Then he said I didn't need a $400 tray. Asked to talk with the manager, they continued to finish the work (even though I had asked them to stop). They said sorry, but the system recommended these items even though the manual and manufacturer didn't. I feel like I was scammed. The dealership should do better when it comes to customer experience and advocacy to earn trust and loyalty.