Do like I do. Don't answer the phone unless you know the number the person is calling from. I have caller ID come up on my computer so if I am at the computer and the phone rings the number shows up on the monitor. This way I do not even have to get up to answer the phone if I don't want to and no running to the phone to see the caller ID to see who is calling.
If your phone company does not provide a mechanism for you to block these calls then I suggest you do one of 2 things:
1. If you have broadband internet access then get ooma. Go to ooma.com. They allow call blocking.
2. There are some answering devices that will look at the caller id and either hang up on those calls or send them directly to voicemail.
Good luck folks and definitely, do not give these people any of your personal info and DO NOT give them your money!
Thank God for the Auto-Reject function on my phone! ^_^
These bozos are trying to collect on a $300 cell phone debt from 10 years ago, way beyond the statute of limitations. I told them to check their laws and stop harassing me.