Or worse, like free mobile in France, force you to send a paper letter with a specific format to cancel service. I cancelled my credit cards instead and will let them try to collect internationally.

They also let you cancel by phone, if you speak French.

They have quite a nice online portal area where I can login and make changes to my plan. But they don't let me cancel there on purpose. It's a dark pattern and I'll never use their service again as a result. Which is too bad, because I was quite satisfied with it otherwise.