I have gotten calls that my Microsoft Windows 7 will shut down unless I call a certain number Is this true? Or another scam?.

Definitely a scam.

I concur with the other comments. First, Microsoft will not call you. Second, support for Windows 7 ends in Jan 2020. But please call if you have any questions or concerns.

Microsoft will never call you.

That honestly sounds like a scam.

Call the store, as it sounds like phishing.