I called a number from Google. Transferred to this Tech company, Cure and Secure Ll

Called GB Google. Was transferred to Cure and Secure LLC, the team h says you have an infection on your network, you have to pay to fix it. Three prices. I chose the lowest ine. I year. They take about 2hrs to gix it. I then tried to open an email attachment. I got an error message. They as re working on it now.