I got a call and spoke to the woman for a while.  She was offering seasoned tickets to the 2012 / 2013 Carnegie Hall season but refused to email me any info or give her phone # back.   She was quite forceful and seemed to want me to commit to some concerts (some of which were >1yr away).  I found this suspicious.

That number is definitely Carnegie Hall.  And yes, they tried to sell me concerts that are nine months to a year away.  I recently attended a concert there.

I didn't take a such a dim view though.  They're just trying to keep alive in the classical music business which is not in great shape these days.

It's not suspicious, it is actually Carnegie Hall.  If you've bought tickets for any event at any time you need to give them a phone number.  Once they get that, they'll call you non-stop for donations/ticket packages.

We've been getting calls from them for a while now - ever since the last time we bought tickets online. The name never showed up on the Caller-ID, only the number. Today, they called, and the Caller ID name showed "Hall, C."

One time my wife answered, and the person calling identified himself as a conductor. She had a long conversation with him. He was a serious music professional, not someone in a boiler room in a low-wage country thousands of miles away. Apparently everyone has to do their share of telemarketing at Carnegie Hall.

Call from "Hall C" . Carnegie Hall. I wouldn't have answered this, but we have friends with the last name Hall, so my partner picked up; they promptly hung up. They apparently call from this number to sell you tix. I am on their mailing list, but only buy from the website. Strange that they would hang up.