It's the marketing person pushing NY Philharmonic tickets.  You ask them kindly not to call back but they do.

You can have these calls stopped by calling the NY Philharmonic Customer Relations at (212)875-5656.  I selected option 2 and spoke to a customer service representative.  I asked the representative to put me on their "Do not call list".  I remained polite during the phone call.  The representative responded in kind.  I was told that the do not call request will take effect immediately.

Thank you for this, very much appreciated!