Fraudulent service

I took a contract with ismart mobile 24 months ago. They sent me a non functional, when reported it they asked it back. Which I did and ever since the phone was never returned but they deducted the money every month. About a month ago I wrote a review here on hellopeter and a guy by the name of Simphiwe Murungai sent me an email asking for my ID number and did as asked. Till today he hasn't bothered to come back to me