I can sympathize with you. A Toyota dealership did the same thing to my brand-new truck. It came with free oil changes, and it was freezing cold in the winter I felt stupid not taking advantage of the free services, although I usually do all my own maintenance. It probably went 4K with this configuration circulating partially unfiltered oil.
I complained loudly, but the stealership wouldn't give me any concessions like an engine warranty or anything. They offered me like six free more oil changes
I plan on keeping this truck until it or I die, so it will be interesting to see how it plays out. Wishing you the best for your engine.
