An anonymous reader writes "I'm currently being targeted by an overseas debt collection scam. My landline rings every 10-15 minutes all day every day. I considered getting a blacklisting device to block the incoming calls, but the call center spoofs a different number on my caller ID each time, and it's gotten to the point where I've just unplugged the phones. I'm already on the Do No Call Registry and have filed a complaint with the FTC. Aside from ditching my landline, changing my number, and/or blowing a whistle into the receiver anytime I actually pick up, are there any real solutions out there? Has anybody had luck with a blacklisting device?"