I once had this really toxic boyfriend, and it ended with a nasty breakup. A couple of years later, he emailed me about getting back some of his stuff (some old books, a jacket, a sleeping bag). He also owed me some money, but said nothing about repaying it.
I had no desire to have any contact whatsoever with him. As far as I was concerned, the stuff and money were just breakup fallout. So I never replied to his emails.
Was that rude?