Hi my name is ***** ***** I will be the expert working with you today to help and resolve the problem you have posted.
can you post a screenshot if possible on this chat.
Microsoft never calls any customer and if you want to verify you can open google and check for Microsoft toll free number. The email which you got may have a different number where you can call and they can lure you and make you understand the your computer is at risk and they can extort $300 to $500 from you and will disappear.
check out the link i attached.
I hope I’ve provided the information you were seeking. If you have any question feel free to ask. Please provide a rating for the service, effort and the time by clicking on the stars located in the upper right corner of the page. Thank you