I also received a call from 212-870-4240. I realize everyone is trying to raise money, but just because I purchased tickets from them, (and rather expensive ones at that) doesn't mean they should keep calling me. Worse yet, I answered the phone, and they didn't actually say anything. Truly annoying.
The NYC Ballet is TERRIBLE about these telemarketing calls. They bug me constantly--every day of the week including weekends and nights. I'm on the Do Not Call registry and hate that they're allowed to call me just because I've been a customer in the past. They already send mail to my residence every performance season, and I'm perfectly capable of buying tickets when I'm interested. Their aggressive marketing tactics are enough to make me reconsider whether I want to attend any more of their ballets!