very annoyed customer

I upgraded my contract in April 2018. Since then I have not been able to use my contract or down load data to my number. I have 7 reference numbers from Vodcacom to fix the problem but still it persists. I am being charged out of data bundle rates as I can not download a data bundle. Products on my contract are not downloaded to my phone. I have been on the phone with just about every consultant at Vodacom, been into the Vodashop, spoken to managers and service, been promised that this will be sorted. Everyone can see there is a problem on my contract. I know there is a problem I just want it fixed. 5 months down the line and I am still trying to find someone at Vodacom who can actually fix it. I keep getting appologies but now I want it fixed....