A good unit shouldn't mind having a disc inside when you turn it off. The lens eithers retracts to its former position before shutting off, or goes there when turned on. The way I see it, your 2-week old player deserves an outright replacement. Either that or at least have it checked and adjusted by the authorized service center FREE of charge.
I am just curious why they say it's OK when your complaint is real. It's important that you show them the problem. Sometimes this happens, transporting the unit might have released a stucked lens. I suggest you leave the unit for their observation.