Cancellation of Free subscription (Lyon)

Hi all

I was wondering if anyone has any experience of cancelling a contract for Internet/tv with Free and has any advice?

I sent my cancellation form today and my contract will finish at the end of April. Think it's ridiculous that I have to send both my huge boxes back on top of the high cancellation fees but I dread to think how much I would end up being charged if I don't. Is it possible to send these by courier rather than through la poste? Has anyone done this?

Cheers

SKH