My mom and I had shared a house and somehow after she died the charity request mailings that she used to get somehow changed to using my name, and even after I've moved to another state they have figured out where I went to and now I get the contribution request mailings here. But, the silver lining is they send stuff like return address labels, little notepads, and blank greeting cards with envelopes.
I feel really guilty not sending them any money, but I have my own favorite charities that I have set up on recurring donations via my credit card (and strangely those charities don't send me many snail mail requests, though one of them sent a text message a few months ago asking if I would increase my recurring donation amount, and it seemed reasonable what with all the inflation so I did and they have been leaving me alone, yay).