Cancelled subscriptions, unable to remove payment method

As subject says, I have cancelled all of my subscriptions. Some have not expired but they are not scheduled to renew. I do not wish to renew them at this time. They all say expiring. I do not want any automatic payments. I cannot remove my payment method apparently while subscriptions are still running so I have to wait many months. If I can’t remove my payment method I will be wiping and selling several versions of macs, multiple iPads, several iPhones , a couple watches, and closing my Apple account.