Actual Call to me at work today:
Caller: I am calling from Smart IT Innovations on behalf of Microsoft and...
Me: STOP, I believe you may be calling from Smart IT Innovations, but you are not calling on behalf of Microsoft.
Caller: Yes, I am calling about the Microsoft Windows Server 2016
Me: Did Microsoft tell you to call us?
Caller: No, but for the Windows Server we offer...
Me: If Microsoft did not tell you to call us, then you are not calling on behalf of Microsoft.
Caller: Let me tell you about our products...
Me: No, you have already lied to us in the first sentence. We are not interested.
<hangs up>