Billed for What should be promotional data

I ported my number from Vodacom to Cell C and chose the Pinnacle 1 bundle I was informed that it has a 1gig additional proma data above the 1gig of data offered with the contract. However the 1 gig was registered after struggling more than a week to get it done and now when receiving my account I see that I am being billed for this. I sent a email to the consultant assisting me on 09.03.2016 by 14.03.2016 I followed up and he said that they have not fixed it as yet. it is now 7 days since my request and still I do not have answers. Please fix this as I regret ever moving to Cell C I should have stayed on Vodacom