Hi Kricia,
Welcome to Microsoft Community. I'm sorry to hear that you've experienced this issue with your Surface Pro 7. It's important to note that Microsoft does not display pop-up windows with tech support numbers to call. These are often scams designed to trick users into giving away personal information or paying for unnecessary services. To get your laptop cleaned, I recommend that you contact Microsoft Support directly. You can do this by visiting the Microsoft Support website and selecting the "Contact us" option. From there, you can choose to chat with a support agent, or request a callback. Contact Us - Microsoft Support
When you speak with a support agent, be sure to explain the situation and provide as much detail as possible. They will be able to guide you through the necessary steps to clean your laptop and ensure that it is secure.
In the meantime, it's important to avoid clicking on any suspicious pop-up windows or giving away personal information to unknown sources.
Your Sincerely Hahn. W - MSFT | Microsoft Community Support Specialist