Just blocked my number and called them back and got the message:
If you would like to be added to our do not call list, please press 2.
Ummmm, how do I know if I want to be or not if I don't know who you are? Me thinks they have something to hide, so I'll opt for yes. But will it work or will it just "validate" that my phone number is real and result in 100 calls from different numbers?