Ok, here is a good way to get a tele-marketer to NEVER call back...

tele: Is mr. or mrs. omebodysay there?
biz:omg
tele: whut?
biz: monkey monkey
tele: comeagain?
biz: oly crap a monkey is in dee house! ee is eeting my nanas!
tele: your waht
biz: my nanas nanas!
tele: im sorry
biz: monkey monkey monkey give my my nanas
tele: i don have bananas
biz: nana nana nana give me my nanas! monkey comeback you upid animal you come back wit my nanas! I wasn my nanas! o no
tele: what r u ok?
biz: you tupid animal you bite nanas dan you bite me!
tele: i did not mite you
biz: elp elp elp i need nanas!

(hang up!)

Brought to you bye: mary (the phsychotic majority of Izbayopiatay)