ShowMyPC Tried to upload a RAT on my pc don't know Internet

Someone with an Indian accent called me and said that Windows was sending his company information from my pc indicating that I had been infected with some kind of malware, & tried to get me to open his website w/ the run command.  I instead opened the website in my browser window & tried to get more information from the guy.  He would not tell me who he worked for, other than that it wasn't microsoft.  He said that Microsoft has nothing to do w/ maintanance of Windows, or with fixing problems with it.  All he would tell me was that Windows sent it's error messages to them, which it wouldn't do unless this company had already hacked my computer.

The more questions I asked, the angrier the man became, until he was saying things like, "Do you know anything about computers?" and "Do you feel good about yourself?"  Eventually he hung up on me.

Afterwards I looked up the name of the website on google & found someone else who was hacked by these same people, & discovered that their "tech support" person had gotten angry with them as well.  I thought that was interesting, pattern-wise.  Do they use anger to get people to cooperate?

I mainly just want to tell others never to type a web address in a box that comes up when you click (windows button)(r) - which tells your computer to run an application on your computer.  If someone wants you to enter a web address, do so only through a browser.