Sorry, but that won't fix your problem, at least not in Germany. If your contract extends because you forgot to cancel it, you still have to pay, since it's co

Sorry, but that won't fix your problem, at least not in Germany. If your contract extends because you forgot to cancel it, you still have to pay, since it's completely legal. If your payment information is not correct, they may even charge you a reasonable surcharge for the failed payment. After a few warning, you can be sent to a legal collection service, which you either pay, or challenge in two weeks, and it case of challenge it goes automatically to court. Then you will need to pay the contract plus court expenses, since there's 100% chance that extension of your contract is valid. If you are outside of Germany, and unreachable to the German state, then it may work, since they could decide it's too much hassle for them to collect.