Anyone still using a home phone makes you particularly vulnerable to scams. Malwarebytes’ readers are often the unofficial IT department for their families, relatives, and friends. Scammers will try to impersonate Microsoft or other antivirus companies. They will impersonate institutions of authority. If they do, simply ask for their name and their department, and inform them you will call them right back. If you get a call from Microsoft. hang up immediately. There is no Internet Tech Support and your connection is not monitored.”]
Source: https://blog.malwarebytes.com/cybercrime/2018/06/psa-users-landlines-vulnerable-scams/