I got those telemarketing phone calls on both the house phone and cell phone, with Caller ID, I can screen most of them. However, the banks that I deal with do try to do a fair amount of up selling as well via cold calls, those annoy me even more.
I got a lot of phone calls asking from the "so-call Charitable organization for a good cause" as well, those are the worse, trying to make you feel bad by not giving them money. I have developed a line, ... "Not Interested, committed to local charity only, do you want to say good-bye or have me have hang-up?"