I proceeded to cancel the renewal of the subscription for Avast Premium Security, but Avast still took the cost of the renewal from my card. Who should I contact? Thank you.
The content within this post may help you: https://forum.avast.com/index.php?topic=323163.msg1713136#msg1713136
If the payment has occurred then try this:
Refund request - https://support.avast.com/en-ww/contact/sales_refund If you haven’t got the Order ID, etc enter 00000000 and give as much information that you can to help identify it.