No, Microsoft is NOT calling you about your expired Windows license

Q:  Got a call from 800-794-1970 saying to call back a 800-596-1758 as my license key for Microsoft Windows has expired and needed to contact them to bring it up to date. I did call them back but hung up before giving them any information as the voice was heavily accented. I do not want to upgrade Windows but apparently I do need to update my license key. How do I do that? ~ Nancy Huffman, Pickerington, Ohio