I renewed by credit card for a year. Within 10 days I stopped receiving the comics I'd susbscribed to. When I opened a ticket they told me I had not renewed even though my account shows clearly that I have.
It's possible to dig out a support phone number, and they claim they will answer it eventually - but they don't.
Taking your money then denying you've paid amounts to fraud - whether they intend it or not. So I'll be contesting the credit card charge.