Hey @michael_83717 thanks for posting here, if you have nine months left on your contract and you are looking to cancel the account before the minimum term ends your final bill would include an early termination fee which would be the equivalent to the remainder of your contract. Alternatively you can wait until 30 days before your contract end date to request the account is cancelled.
If you are looking to cancel the account but keep your number incase you need it in the future then I would recommend moving the number to prepay and topping up every 6 months to keep it active however if you move before your minimum term you will still have the early termination fee on the final bill.
To cancel the account or move to prepay you can call 1913 or you can contact our Web Messaging Team here.