I think it might be a fund-raising organization in St. Louis for WNET, the PBS channel in NYC--but if so, WNET should think twice about using them and get rid of them as fast as they can. The first few times, before I blocked them, they never left a message, which is enough to anger me right there. Now that they're blocked, I went onto my phone provider's website today to check my call history, and discovered they had tried to call 6 times today. I realize it's a rotodialer, but you'd think the people behind it would program it to give up after awhile.
I called WNET 13 to complain about this caller. They call often and never leave a message. I asked WNET 13 to remove my number from their caller list. They said they would do it. It takes a couple of days for the 'system' to work its way through to stop these annoying calls.