I was receiving calls from NCO a collector. I blocked all unknown callers who don't show an ID. Immediately thereafter, I got calls that the ID shows "Colorado caller" or "california caller". when I didn't take those calls for a week, i have now started receiving calls from 1-111-111-1111. When I take the call, it hangs up. It is an attempt by credit collection companies to harrass you into unblocking the blocked calls. They will call all hours of the night. Interestingly enough this is a debt that was less than $90 and was disputed and over 9 years old (four years past the state statute of limitations). In the recent Bankruptcy Abuse and Consumer Protection Act our Congress, thanks to lobbying efforts of the credit card companies, passed legislation that gave such a boost to collection companies. Back when, many a person filed bankruptcy just to stop the creditor abuse even when the debts were too old to be owed. Now they can't. They have to suffer these unwanted calls. So the collectors beefed up their ranks. Even though the debt is too old to collect or was paid, these collectors harass people in hopes of getting a mafia protection payment. I say write you Congresspersons as well. That act did not contain a CONSUMER PROTECTION and is a misnomer.