Cancelling subscription

I have decided to cancel AVG and used AVG Clear tool to remove from my computer.  How to I notify AVG that I am cancelling officially

Hello William,

We have sent an email and explain the subscription details.
For further assistance, please revert to our email without changing its subject.
Thank you.

Hello William,

We have sent an email and explain the subscription details.
For further assistance, please revert to our email without changing its subject.
Thank you.