Still being charged for two handsets

<p>I have upgrade my contract in July 2016, I understand that this was after 22 months and should be charged for the additional hand set until the November statement. However, the second hand set is still being charged to my account, for 3 additional months to date. I have been to Vodaworld on numerous occassions as well as calling customer service each month. Each time I have been, the response I receive is that they have put through a credit to my account but to date I have not seen any money come back my way nor have they stopped charging me for my second handset. The reference number I have been given is: 1- ********** 290811. </p> <p>This is truly disappointing as I have only ever had a vodacom account but the lack of willingness to sort out my problem is making me question whether or not I should switch providers. </p>