Internations Policy (Grenoble)

Dear all,
I've had a horrible experience with Internations. I thought that I had to pay to attend an event which was actually not necessary. Finally I thought 'never mind', it's just for one year. Actually they debit each trimester your account, without you signing any document ! So this event was at the end super expensive and they clearly refuse to give back any part of this money. So be careful, don't register !!!