|That is almost certainly a scam so don't even touch the icon or phone the number.|
Firstly download MalwareBytes from here (green button top right):
Before running it go to "Settings > Detection and Protection" and put a check mark in "Scan for rootkits"
Next download and Save ADWCleaner file from here (blue button near top):
Go to the file you have download, double click it and run the Scan.
Copy/paste both logs on here (probably easier to make them two separate responses). Even if either of them fix the immediate symptoms you are likely to need to do some more checks to see if your computer is clean.
Always pop back and let us know the outcome - thanks
message edited by Derek