I wanted to cover this to help you avoid getting involved with the hacker.
Browser hacks can come from webpages you browse and from the ads that may appear with those pages. A browser hack essentially takes over your screen. Sometimes doing this with an audio announcement that you need to call the phone number on the screen. This hack is mostly huff-and-puff and you can easily recover from it.
If your screen gets taken over, try right-clicking in the bottom taskbar in an area where there are no icons. If you do this you may see a pop-up menu with a list of possible commands. Left clink on the Task Manager command.
Once Task manager is up look for the Processes tab and left click on it. In this list you will see the browser instance for the browser you were using when the hack occurred. Left click on that instance and then in the bottom right hand corner of task manager click on the End Task button. This usually ends the hack and returns you to control of your system.
After you regain control, I recommend you run a Malwarebytes scan. Malware bytes will find items that may have gone deeper into your system and list them at the end of the scan. When you get to the end, make sure all items found are selected and then Quarantine them all.
Once you have done this, run the scan again. Hopefully zero items will be found. If zero, reboot and scan one more time. If zero after the reboot, you have removed the hack and any other malware that may have been in your system.
Hope this helps you.