Collection agency called Plaza Associates leaving long robomessage for some corporation I never heard of. Told me to hang up and not listen to the message if I wasn't the party they intended to harrass. HAHAHAHAHAHA - my voice mail box is my property and I can listen to whatever you leave there fool! I immediately went to my voice mail service web site - I use YouMail - and set it to hang up on calls from this number, after playing the AT&T message "the number you have called is not a working number". Thank God, I don't have past-due debt any more, but I lost my business as a result of the 9/11 attacks and had 52 (that's right, FIFTY-TWO) accounts go negative, and was called night and day for three years by the slimiest, drunk, lying pieces of human garbage that can figure out how to pick up a phone. I learned a lot of strategies about dealing with them. I still don't answer my phone unless I know who's calling. They work an account in about 3 months cycles. If they NEVER get you to pick up your phone, they call less often. If they even once get a live person to answer, they start calling multiple times a day. Never repay a debt through a collector, only pay directly to the company you owe, even if they say they "sold" your account. They will still take your check. As soon as you get a series of hangup calls, you know a debt collector is trying to feel you out. That's where a service like youmail comes in handy. You can call-block numbers, or have it play the disconnect tones, then hang up (even better). When their robodialing machines detect the disconnect tones, it kicks your number out. It is fun to toy with the representatives, but more effective, if you really want to be left alone, to make sure they never, ever get you to answer the phone.