After countless times of trying to book to visit NT sites to no avail as they are fully booked!! I decided as my family membership that i pay monthly for isn't providing what i pay the money for to cancel my membership.So i emailed explaining and the response i got was ' unfortunately i can't cancel it due to it being renewed in May ( i wasn't aware it had been renewed as thought it was a rolling membership so i have to pay til next May even though the membership hasn't been used and by the looks of it won't be as always fully booked!!)Apparently when i renewed that means they asign the money to a project so therefore won't let me cancel as they need my money!!So now im stuck paying for something that isn't providing what it should be.