You are definitely listening to scammers. That is not windows. Windows has no idea
what your license number is. Microsoft has you register it, they dont have people call you
Did you give them any info at all, give them a check, agree to anything or let them in your
Also, i can look up that number for you too if you have it?
To get started, I need to know what type of computer you are using, a Windows XP, Vista, Windows 7, Windows 8, Windows 10 or a Mac.
If its a Mac, please check the OSX version as follows, Click the apple sign at the top left of your screen, then click about this mac. And then where it says version, send that to me as a reply.