Portfolio Recovery. Debt Collector.
They call many times a day. Never leave messages. Comes up as "unknown caller" on caller I.D.
They have many numbers that they call from.
No, they never give up. They call from several different numbers...and I block them as fast as they change numbers :) I'm not even the person that they are looking for, but they won't believe me. I decided to just have fun messing with them...waste my time and I waste yours.