If someone claiming to be from Microsoft tech support calls you:
Do not purchase any software or services.
Ask if there is a fee or subscription associated with the “service.” If there is, hang up.
Never give control of your computer to a third party unless you can confirm that it is a legitimate representative of a computer support team with whom you are already a customer.
Take the caller’s information down and immediately report it to your local authorities.
Never provide your credit card or financial information to someone claiming to be from Microsoft tech support.