I need to cancel my account

Hello Katherine,
We will help you with it. You have AVG TuneUp - Unlimited and AVG Secure VPN in our records, I couldn't locate AVG Antivirus subscription under your account.
Have you subscribed to trial version using an alternate email address?  
Refer this article: https://support.avg.com/SupportArticleView?urlname=Cancel-automatic-license-renewal to cancel your AVG subscription.

I need to cancel my AVG Anti virus. as my computer died. Am using a different computer at the moment. How can it be o difficult to do this?

Hello Katherine,
We will help you with it. You have AVG TuneUp - Unlimited and AVG Secure VPN in our records, I couldn't locate AVG Antivirus subscription under your account.
Have you subscribed to trial version using an alternate email address?  
Refer this article: https://support.avg.com/SupportArticleView?urlname=Cancel-automatic-license-renewal to cancel your AVG subscription.