Make sure you don't have anything open in your browser if you visit this site as I had to restart my browser=google chrome.
[Massive browser lock with more popups] hxxp://www.techsupports.online/wel0oX7/
Phone: +61 1800985028
They won't answer silent calls.
They are also quick to block numbers once they know you are pranking them.
It's a tollfreeforwarding.com number they are using.