[wayoutthere]

You’re assuming there is an invoice; many times there is not which is why the chargeback is auto-approved.

For better or worse, the chargeback is the only weapon end-users have anymore.

[dexterdog]

That's utter nonsense. Most reasonable companies will offer you a refund if you simply ask, especially if you haven't used the service or incurred any costs for the company because of your failure to cancel. When you sign up for a monthly service it is not the company's responsibility to make sure you want to continue each month. Some still do, but it is not required.

[wayoutthere]

Right, but if cancellation becomes a dark pattern, use a dark pattern in response.