A year ago I bought Grimefighter, it would never work on my system. Submitted a ticket for a refund, got all sorts of promises and the run around (for that Grimefighter travesty) until I got sick of dealing with it. Wrote off the thirty bucks, uninstalled Avast completely and switched to another product I am happy with. Yesterday I get an email telling me it's going to auto renew, (Grimefighter, it has a new name now, but I imagine it's just as broken) after I closed out my account with Avast and stopped all auto renewals.
I went to the link from the email and turned off auto renewal for this mess, again. I can't find any way to remove my credit card information, as I will never deal with this company again. If I have to, I guess I can contact my bank and have my number changed, as I have lost all the trust I used to have in Avast.