How to cancel new subscription

I ordered AVG internet security and the tune-up program.  AVG has already taken the money off my card but I do not want to keep the tune-up program.  How do you cancel within the 30-day trial period?

Hi Judy.
We acknowledge your request and confirm your right for refund.
If I may ask, what is the reason for the refund request?

Hi Judy.
We acknowledge your request and confirm your right for refund.
If I may ask, what is the reason for the refund request?