Anyone with a mobile contract that’s ended after 24 months and is still paying the same amount they were when they first took it is throwing money down the drain. Chances are the plan you’re on factored in handset repayments so you’re now overpaying by a big chunk every month. When this happens, it’s all about haggling to get yourself a cheaper monthly plan or more minutes, texts or data. In fact, you have three choices: upgrade to a new phone with your existing provider, switch to a sim only deal and keep your current phone or cancel your contract …