£316 Vodafone bill for returned phone

Please help me as I cannot afford this dispute over a phone bill from Vodafone for a phone I gave back to Carphone Warehouse. TB, NORTH YORKS

You took out a contract with Carphone Warehouse for a phone on the Vodafone network in December 2015.

Vodafone acknowledges that you contacted it regarding cancellation and that it advised you to return the device to the Carphone Warehouse store.

Unfortunately, it heard