I signed up to a 24 month cable plan which included a T-Box, this was included due to signing up for 24 months instead of 12  I had to cancel the contract at 18 months due to moving.

From what I can see on the Vodafone website and what I was told on the phone, the ETC should be $199 since it is a single 24 month contract. Not two different congtracts  The t-box being supplied was due to the 24 month internet contract versus a 12 month contract. 

Vodafone have just sent me an account for ETC of $399 or 2x $199.50.

Can anyone clarify what is right before I call them up?

I am happy to pay $199, as stated before but not $399.

Thanks.