(631) 963-7520 is the NY Daily News (newspaper).  They keep calling even after you let them know that you're not interested.

Based on a previous post, looks like the number originates from PAETEC who provides VoIP services, but it can be a call from any number of telemarteting companies.  Today's caller identified her company as http://contractpharma.com/ but I believe it depends on who is marketing to you.  

It may be annoying, but I don't think illegal.  Most businesses grow with telemarketing.  One very necessary evil.

My suggestion, learn how to block the call and get on a do not call list.

Well..reading through these...it's all the same! They called once in the evening, and just now. I called them back the first time, but I blocked my number. "All of our agents are busy"...I didn't stay on hold to find out what its about. If they don't leave a message, they aren't really trying to get in contact with anyone! I've had problems in the past with creditors calling me, and I thought this was yet another. Still may be..who knows.

they call all damn day

Like everbody else, I missed the call on 4/01/09, I called back the number and left it on speaker for 76 minutes while I was doing something else, I got this message "all of our agents are currently busy, please hold for the next available agent". It plays the message every 20 or 30 seconds but no one ever picked up...
The weirdest thing is that, the number was deleted from my Caller ID, and on my statement it only shows the call I mede to this number but not the incoming call.