You could, but there are penalty charges for pulling out early. Also if TV is an integral part of your existing package, you will be getting discount on the other services from it. This may mean:
A) You have to pay more for your remaining services
B) You have to enter another 12 month contract for the remaining services.
Cable customer since 1993. Services: FH TV, Sky Sports & Movies (2xV+), Talk Unlim Telco, VIVID 100, Virgin PAYG Mobile