Bought a 2016 Rav 4 went to have oil change, they ...

Bought a 2016 Rav 4 went to have oil change, they left the oil filter out ,went back to inform them ,they said it would not hurt anything if it would have it would of done before now. I believe that they should should have at least extended my warranty, but no they wouldn't do anything about it ,don't have your car serviced there