Upgrade Reversal by Vodacom

I ordered a telephone iphone 6 online which i returned on 08/Nov/2018 without activating the phone. Waybill Number COL ********** 1 At the end of Nov i realized that my contract was changed, as well as airtime that i had on my contract was removed. Since then I having been calling Vodacom virtually daily to get this contract reversed. Ref No for my calls 1- ********** ********** , this number was only given after I've been calling for about 2 weeks I have been on line with 2 supervisors Christina Dyosini and Thersias, both promised that my reversal has been escalated, still no change to contract. According to the staff, they know who received my phone back at the warehouse, but it was never put back on the system...until this happens , according to Christina, there is NOTHING they can do..... Unacceptable Vodacom