Called my cell. I didn't pickup. No message left.

I received a call from (407) 653-2684 on my cell phone. I am on the don't call list. I also do not give out my number. A man called and after my not saying anything for about 12 seconds , and the he hung up. It sounded like a telemarketer.

I got a call from this number at 7am. Isn't that before legal telemarketer hours??  They didn't leave a message.

Received a call from this number just b/f lunchtime.  Three second voicemail with no sound = Blocked this caller.
Do Not Call Listing works - however they can't prevent robocalls or calls from unethical telemarketers.

They called, I didn't answer. They left a blank voice message. Now on blocked list.