Pay for Data- Get 1/2 the Data- Not our problem!

On Friday the 26th I used the App to purchase Data, the promotion was R299 for 6G + 7G Night Data, I only received 3G instead of the full value. I immediately called CellC, the refferd me to the bank to log the issue. It is Wednesday and nothing has been done, no feedback no information and not taking ownership. Calling the CallCentre a 2nd time, leaving me out of pocket a 2nd time I am told to talk to Cell C, so between the partners no one wants to take responsibility. This is sad, so sad!