My creditcard was not charged, and if the cc-company preserved from a fradulent use, i'd have to reorder - with 3 weeks delay. (I did this following the last call, just to be safe, it'll be delivered someday.)
So if you can't check your cc-status, go to your live-account, where you're find your paying options and transactions.
In my research on several chanels, most canceling-problems seems to be based on banking/cc-companies blocking ms-store as a fradulent service, but just a few got information about this.