I downgraded my account in 2015 and to this day I am still being charged 9.99/mo! Now I'm working with the fraud dept at my bank and will be going to the consumer protection agency here in FL. I've had my debit card changed 3 times now and somehow they continue to bill me! I have verified all my accounts are of the basic free account.
I have all basic free accounts, have never gotten an email, yet dropbox still charges me $9.99/ month! It's been going on for 4 years! My bank is out of options now and we have to file fraud charges and consumer protection complaints on dropbox.com now!
I've had my debit card changed 3 times now and somehow they continue to bill me!
For future reference, and this is for any subscription service, not just Dropbox, changing the card doesn't always cancel existing recurring charges. The card details are only used to authorize the subscription. After that, the authorization already exists between the company and your bank, so your bank just continues to allow the charge. The card number no longer matters at that point. To cancel a recurring charge, you need to actually cancel the service in question.
I've changed cards while I've had active subscriptions, and I didn't have to update the subscriptions until the expiration date of the original card came up.