The number most certainly is crap, but I still don’t want to perpetuate a scam in any possible way.
That is the latest scam that I received today on my phone. In a computerized voice aka robo-call, this scam is one of many trying to extract money if not a credit card number from some unsuspecting person.
Naturally, Microsoft would not call, and your OS does not expire. It may become obsolete but indeed would not terminate.
If you have a loved one or know someone who might fall for this you might want to give them a heads up.