This is actually a widespread practice among German ISPs. I once fell for this myself.
What they do is that when you order something they automatically add some service most customers almost certainly don&#x27;t want or need (like a software package or homepage webspace) and that is free for the first months. You cannot remove that from your order, you have to later cancel it manually. As it&#x27;s free at the beginning new customers checking their bill won&#x27;t notice it as something odd (it&#x27;s some free addon, why care?). Then after some time it starts costing a fee.