Frequent and persistent calls. I have them blocked (great app for mobile phone )  they call at least 3 times a day    

Frequent and persistent calls. I told them I am on the do not call list and ask them why they keep ignoring that fact. Plan on reporting it to the authorities.

Called again, asked for me by my real name.  I claimed not to know who that was.  They asked if this was my address and I told them it wasn't.  The caller claimed to have a financial settlement for me, I told him it sounded like a scam and told them not to call my number again.  Two minutes later, they called again, but hung up after one ring, then called again after another half a minute.  They asked for someone else, and I said, "I thought I told you not to call this number again. Why don't you send these guys letters?" He hung up.

Call from Seeman-Holz, a financial planning company in Boca Raton.  I asked them why they were violating the terms of the do not call list and they hung up.