So, I bought a 3 month TV pass for GoT which is due to expire on the 28th. If I cancel now (to save them automatically charging me on the 29th) will I still be able to watch this week up until the 28th? Surely I have technically paid for 3 months access already? 
Thanks.

Thanks.
I presume later on down the line I can buy more vouchers for my account? IE my account doesn't get closed when cancelling a sub?