DNS Hijacking - recent email received from AVG News

Ren, Please see your other posting (https://support.avg.com/answers?id=906b0000000Df0AAAS). If you think this repeat posting is an AVG Community support issue please leave feedback on this AVG article (http://avgclick.me/AVGfeedback).
AVG Guru

Ren, Please see your other posting (https://support.avg.com/answers?id=906b0000000Df0AAAS). If you think this repeat posting is an AVG Community support issue please leave feedback on this AVG article (http://avgclick.me/AVGfeedback).
AVG Guru

I received an email from AVG news 3 days ago, and recently I have been clicking on regular websites, but more often get an error site - DNS cannot be reached?   Or something like that.
I clicked on the link in your email to check how I can repair this and I got a

404 - File or directory not found.


I have purchased I don't know what from you guys and don't seem to get much joy out of this product. 
my Internet sercurity is 'protected'
PC Tuneup remains at 10%
Provpn not  installed
Web Tuneup - open

Please advise what products I have purchased from you and where I can take my laptop to have this all sorted out.

Ren Holmes