Non authorized updated

Hello Jeffrey,

Sorry for the inconvenience caused.
Upon checking your record we see that you had the license for AVG PC TuneUp (1 computer) 7th June 2016, since it had the Auto renewal in active state you have been charged for the renewal.
If you don't wish to continue with this renewal license, you can apply for the refund using this link: https://support.avg.com/RefundForm?l=
Once the refund request is submitted your amount will be credited in 5 to 6 business days.
You will be getting the email regarding the refund status.
Please keep checking for the email on spam, junk and inbox folders.
Thank you.

Hello Jeffrey,

Sorry for the inconvenience caused.
Upon checking your record we see that you had the license for AVG PC TuneUp (1 computer) 7th June 2016, since it had the Auto renewal in active state you have been charged for the renewal.
If you don't wish to continue with this renewal license, you can apply for the refund using this link: https://support.avg.com/RefundForm?l=
Once the refund request is submitted your amount will be credited in 5 to 6 business days.
You will be getting the email regarding the refund status.
Please keep checking for the email on spam, junk and inbox folders.
Thank you.

I was charged by non authorized updated. How can I get  refund?