Hello, I am receiving calls from a bill collector that blocks their number using *67. So by unknown caller I don't mean somebody that I don't know, I mean it literally says unknown and I don't have the option to block the way you would block any other number. Is there like a Cydia tweak or anything that I can get to block these calls? I am getting so irritated they cAll at least 10 times a day minimum. And yes I understand that paying off my bill is one way but unfortunately I don't have a magic fairy that ***** gold.