Windows security warning

Hello John. Please be informed that Microsoft does not warn and offer technical support. It is a fake alert and please do not respond to that. I would request you to uninstall all unknown/unused programs and browser addons.

AVG reports PC secure but a warning message suposedly from windows advises me that my data is at risk and advises calling a 0800  numberor free advice.
Anyone had this apparent contradiction?

Hello John. Please be informed that Microsoft does not warn and offer technical support. It is a fake alert and please do not respond to that. I would request you to uninstall all unknown/unused programs and browser addons.