How do I take MFN items off international Amazon sites?

I keep getting orders to Italy with a very small delivery window (less than a week) where the buyer hasn’t paid anything extra for postage and it’s costing me money (Around £15 to £20 more) to post an item and they almost always arrive later than Amazon’s estimated date

I’m doing it because I don’t want to get a defect for cancelling an order, but I don’t offer international delivery so I don’t understand why my listings are appearing on international Amazon sites. It always seems to be Italy also.

I don’t mind my FBA items because Amazon deals with that, but I can’t keep paying out for these orders which are losing me money each time.