I received a demand from Arvato located at www.arvatofs.com by email, which so badly produced it looked like a scam and I was about to delete it. I wonder why it wasn't rejected by anti-spam automatically! There was no letterhead or logo, nothing to say who they were, no company address, etc. I'm pretty sure for a registered company that's actually illegal! The demand turned out to be genuine enough (my mistake - overlooked paying for something I thought was cancelled), but the way Arvato handled it was totally unprofessional.