I registered, but I still get them...even at odd times like Sunday afternoon. I have taken to using the tactic devised by George Carlin. When they ask to speak to you (or your spouse or whatever) simply say "hang on a second, and then leave the phone off the hook for a verrrry long time.

"Io sono stanco, sono imbigliato, and I wan't everyone here to know, there ain't gonna be no trouble from me..Don Corleone..Cicc' a port!"

"I stood in the courtroom like a fool."

"I am Constanza: Lord of the idiots."