paying for a i Phone i didnt recieve and signed

on 16/01/2015 I MR PA Rossouw ID nr *** received phone call to upgrade my data contract with Vodacom. The nr is ***. I paid R99.00 for this contract for the last 24 months up to January 2015. however after the phone call from Vodacom to upgrade this contract R709.00 was deducted from my account via debit order each month. After I required about this, I was told that I was paying R510-00 for a handset as well as R199.00 for a uChoose Flexi 200. I did not ask the consultant to change my contract to this uChoose Flexi 200 and did not receive any handset at all. Since January 2015 Im paying for a phone that I never received. I did not sign any document related to the collection of the handset.