Please HELP! Charged by DRI*AVAST SOFTWARE without consent

I just found out today that there have been recurring transactions on my credit card from DRI*AVAST Software ($49.99). If I remember correctly, I signed up for a free trial with another email account ages ago but I had no idea that it would still continue without my knowledge and consent months after I have already uninstalled the software. I came to this forum as the last resort as I can’t also remember the details of the account I made back then. But after seeing multiple other threads with the same issues, it’s hard to believe this is accidental. Please help as I have no record of a order ID too and I really need the recurring transactions to stop!!

See this advice from Bob:
https://forum.avast.com/index.php?topic=220340.msg1517002#msg1517002