Cancellation requests that don't actually cancel
The single most common BBB complaint against ClickFunnels: users go through the in-app cancellation flow, see a confirmation, then continue to get billed $97 or more monthly for as long as a year. Resolution typically requires multiple support emails and, in many cases, a bank dispute.
"Cancelled in May. Got billed in June, July, August, September. Support kept asking me to 'confirm my account' to the same email I'd been using to log in."