would not identify himself

I get a call from this number every night at supper time.  The person asks for my ex-husband.  I tell them he doesn't live here and they hang up.  Every night. They won't stay on the line long enough for me to tell them not to call again.

1/21/11 they call and say that they are with Visa and Mastercard. how would i like to supplement my income? i said no thank you i have alot on my plate right now. she said thank you have a good day.

today 1/22/11 a man called this afternoon. hello may i speak to "lola"? this is her who is this?
missed the actually name. i simply said you folks called me yesterday i would like to take me off your calling list i'm not interested. he rudely says your not interested it supplementing you income? a few more things were said about how they didnt call me and how did i know. said i saved the # so i could be sure it was them so i could have them take me off their list and if they calle dme again i was going to call the police. which i will do anyway come monday morning.

forgot to mention he hung up on me after i said i was calling the police