Contract phone agreement not meet by Vodacom

I did a updgrade on my contract with Huawei P8 Lite choose Uchoose R149 contract which the device was R0 charged, I also double confirmed with the online consulted and she said phone its free AND only paying monthly R149 and getting R150 airtime

I do get the R150 airtime but the phone its been charged. I been calling vodacom and no assistance also logged service request on the 21 Sept all the supervisors been taking too promising to resolve my issue and call me back. This week Tuesday called in again to the online department i am still waiting.

I want vodacom online to refund me all the months that they been charging me a device which was suppose to be free. ********** 183