This works very well here. Just visit the website of thing you want canceled, scroll to the footer, click vertrag kündigen and you get a form to cancel, I have

This works very well here. Just visit the website of thing you want canceled, scroll to the footer, click vertrag kündigen and you get a form to cancel, I have done it a few times now and it's 1000x better than searching in some customer portal or even worse calling. Good for the US.