Paid off device but 1 year left in contract

[Chrispee]

Hi,

I took out a 2 year deal through Carphone Warehouse which was 28 a month for device and Airtime (£10 + £18 billed separately) My o2 tells me I have paid off the device, yet my airtime bill only is now over £30 a month as standard.

What are my options for cancelling the contract and going Sim only? Or to another network for that matter. Will there be a cancellation fee on airtime with a year left? I believe it is an o2 unlimited 24 if that helps. Just spent 45 mins on livechat only to be cut-off! It also seems ridiculous that airtime now is more than handset and airtime a few months ago.

Thanks in advance

[MI5]

£18 a month over 24 months would mean you were paying £432 for the phone, which sounds about right, so I'm not sure why it's saying you've paid up after 12 months?