They wont stop calling!!!

I have pressed 3 as instructed for them to take me off their call list.  I have called back and and pressed 1 and punched in my number so they do not call, and I have called and tried to speak to someone about this and they hang up.  I have to unplug my land line during my 2 yr olds nap and at bed time because of this!!! I have only been in Va for a year and the amount of telemarketers that call is ridiculous!!!  I even have us registered as private so keep this from happening!!!!!!!!!!