couldn't find the best place to stick this query soooo...
Anyway, cancelled my subscriptions in November as I was changing broadband provider. Had what I assumed was a final bill of £6.00 ish and thought nothing off it until today as it seems I've been charged in increasing amounts since!
December was £12.98 and then £19.97 every month since!
Admittedly I should have checked my account before but now I have and for obvious reasons cant get hold of anyone to nag at.
When you go into My Account > Bills & Payments whilst logged in on here it should show the charges and when highlighting & clicking the charges further it should itemize the charges by clicking on any arrows to show more information on screen.
If the figures are all Broadband & Phone related and not associated with any TV passes then i don't know why you have been charged for further extra months.
Like you said they might be a possible small charge or refund when you switch provider depending on the day when the switch ties in with your final NowTV payment due date, but i wouldn't expect any further monthly payments (i don't work for NowTV and replying back here has a customer).
If you believe the further monthly charges are wrong, then maybe send them some communication on the web form in this link page below.