They must figure that sooner or later you'll want viagra, and in spite of mercilessly harassing you for years, you'll finally relent and buy from them. Right? Calling me just once puts them on my Do Not Buy list, but that's just me. Obviously, plenty of other people DO buy from spammers. Go figure.
"Canadian Pharmacy". I've been telling them to remove my name and number from their contact list for multiple years. Once again I asked the caller to put his supervisor on the phone. Once again he said OK, then hung up.