Easy to subscribe to. Virtually impossible to cancel subscription

I find it verging on unethical when a supplier makes it really easy to sign up for their service, but when you want to cancel, there is no functionality on their website to cancel your subscription. No problem. I’ll send an email to their billing support email. Only to get an email back informing you that this email address is not monitored and that you have to use one of their other contact methods. Still eager to resolve the issue without too much fuss (like with most other subscriptions for plug-ins on WordPress) you go to the chat line. Only to be informed that billing queries can only be handled by telephone. So even though you live in South Africa, you make an international phone call to cancel your membership. Once you’re on the line, you have to tell your story to at least three different people until you get transferred to the correct “cancellations” department (while those international phone minutes are ticking away.)
Eventually you speak to the right person and you are assured that your membership will be cancelled. Only – two months later – you get charged for the renewal of your membership. And the process repeats itself. You cannot email or resolve it via their chat “helpline.” So you are forced to make another international telephone call and you think that this company is sailing very close to the “too unethical to ever do business with again” border and you feel that you should warn other users about their practices.