Fake Caller ID - Number doesn't work

Called with a fake name, when I asked for a license number he hung up.

It's another fearless contractor telemarketing mill that cares not about the do not call list.

Contractor Telemarketing
My new 7 step strategy for contractor telemarketing.

When the number doesn't come up...
1  Ask them why they are calling?
2  Tell them "I have a lot of work that I am currently looking for contractors to do."
3  "But, I need to finish something, can I call you back in 5 minutes?"
4  Tell them you need a phone number to call them back at.
5  If they haven't hung up, ask the person's name and ask if I should ask for them, or someone else.
6  If they haven't hung up, ask them their CONTRACTOR LICENSE NUMBER.... They will most assuredly have hung up by now.

7  Then go to www.DoNotCall.gov and report them!!!

ASK THE PHONE NUMBER FIRST!!!

Calls from this number at least 4-5 times per week.  I do not answer since called ID says "unknown".  Call blocking is experiencing a major fail lately as the number of these annoying calls is as bad as it was prior to the initiation of the program, after a lull when some telemarketers actually used the list.  Since there seems to be no penalty for continuing to call, they have gone back to their prior levels

This number keeps calling and not leaving a message.  It has a busy signal when I call it back.

I receive a call from this # everyday and they hung up on me every single time. When I try to call back there is not signal

another fake number--if I let it ring three times, invariably there is no one there.  If I try to call it back, number is no good