We’ve experienced and gotten many calls from clients about a call that came in saying they are from Microsoft. Do not believe them. Microsoft will never make unsolicited calls to you. It is a junk call from cyber-criminals that are just trying to gain access to your device and get payment information from you.
Cyber-criminals will generally start a call saying they will help solve some kind of problem on your computer to try and gain your trust. Once they do, they will either gain access to your device and create a vulnerable access point, convince you to install some kind of unnecessary program, or make you pay for phony work.
If you ever receive these kinds of calls, just hang up. Microsoft will never make unsolicited phone calls to you.