Microsoft would not give you to a third party.
Did your wife receive some pop up saying her computer was hacked and it looks like it was a Microsoft warning, and it gives a phone number to call? If that happens, you want to hold down Ctrl+Alt+Del, then launch Task Manager, and then end all browser items there to close it.
When a pop up like that happens, your computer is not hacked. It is just a pop up page that can have some audio effect (sometimes) and display in full screen mode, so it appears the computer is locked.
Scammers use various methods to trigger these pop-ups. Pop-ups are a form of online advertising. They are often integrated into websites or applications through ad services. Many websites use third-party advertising services to display ads. Sometimes, these ad services might inadvertently allow scam ads to be displayed. This does not mean the website itself is malicious, but it indicates a lack of stringent ad vetting.
Did you guys give access to this company to remote into the computer? If you didn't, and didn't give out any private information, everything is fine.
You can read more about this type of support scam here: https://support.microsoft.com/en-us/windows/protect-yourself-from-tech-support-scams-2ebf91bd-f94c-2a8a-e541-f5c800d18435