This is a scam. They say they are from Microsoft and that your computer is being used for illegal purposes. They try to get you to change your security settings so they are allowed remote access to your computer. Once they do they can steal passwords and bank information. Microsoft does not call on the telephone.
Hey "Mike"! Would you like some words of wisdom that might help you become an honorable man instead of what you are? Here ya' go... "A Rupee saved is a Rupee earned."
Skeff Ett Liv!
Gunnar