And then also, the surprise of the telemarketer, at the revelation that YES we were already customers of theirs.
And I've come to a decision - this response was SO good at producing a satisfyingly dumbfounding effect on the telemarketer that I think I will use it again. Whether we're signed with them or not.
imagined future conversation with telemarketer
telemarketer: Hi this is blahblah from blahblah company and we were in the area and wondering if you were interested in a blah for your home?
Me: We've already got one thanks.
telemarketer: Oh. You do?
telemarketer: Oh. really?
Me: Yes....well no, I'm lying but we don't want one anyway. THANKS!!!