Shit wears out.
I'm guessing aluminum pan.
I doubt a dealership would use one of the self tapper bolts for a repair, give them credit for at least suggesting a proper repair.
Replacing the pan might be more expensive than the repair if the pan cannot be removed without lifting the engine.
For some reason, this thread is making me think of the car wash thread- i.e. I don't want to do the job myself, and the people I trusted to do it made things worse.