They're a bit shameless at never taking people off their mailing lists, so be sure to use the address of some friend or neighbor you don't particularly like.
"Whoops, I have no idea how my cards addressed to my name ended up at your house! Well, it's for a good cause, here, you can have half to make up for the inconvenience!"
"Whoops, I have no idea how my cards addressed to my name ended up at your house! Well, it's for a good cause, here, you can have half to make up for the inconvenience!"