I lay the phone down, so the caller gets charged more minutes. HeeHee
My favourite one which always ensures there is never a repeat from cold callers, is to put on a French accent and say Madame Fifi's have you reserved a table as we're fully booked.Hello? Madame Fifi's authentic French restaurant? Job done !
My refrigerator is stacked full of them.... I'm worried I will be found guilty of call hoarding.