Why is everyone getting so bent out of shape about anonymous calls like these - take the advice given here already - if you don't recognize the caller - DO NOT ANSWER the phone!! Sure are some thin-skinned people out there.
Same here, these losers somehow got my cell # which I only ever give to friends & family, and I thought it was illegal to call cell phones anyway, we have to pay for these minutes dangit!!! Majorly pissed!!!!!