I work phone banks for the Pubbies quite often, and I wouldn't take the hang-up personally. Once in a while I'll get a Flaming Lib on the line by accident, or the wrong family member will answer the phone and they'll let me have it with both barrels before turning it over to the person I actually need to talk to. (Call Lists are not necessarily complete or correct.)
You're 100% correct in your thinking that we're raising money with those calls and not trolling/polling for "ideas" on how to make the par-tay better at that particular time.
Still, I'm signed up for all sorts of DemonRat e-mails, and I've got my "Friends of Hillary!" bumpersticker all ready to deface and put on my bumper for Fall '06. And I lie to 'Rat pollsters at every opportunity. I figure I'll tell them what they WANT to hear because it gives them a false sense of security, and then when they LOSE, it's all the sweeter for me. I'm that 3.5% "margin of error" you read of so often. ;)
All is fair in Love & Politics, as far as I'm concerned. And I'm in it to WIN! :)
I, too, let many liberal organizations have my name in their list. I means they overestimate their support at least by one (may be more if they use some kind of multiplier formula).
I work phones, too...it isn't an easy job. Especially if you get an angry person. Just move on to the next name...:)