Fnb bad service

I was contacted last month by a consultant to take fnb simcard and data bundle contract. Which I was supposed to be paying R125p/m and receive 2Gb. The money was deducted for the month of August and September which was R175. The money was deducted from my acc on 07/08/19, and did not have a problem as it was explained that it will be for Aug and Sept. Then October they will deduct R125.. Now the problem is that the data was ever loaded. August I let it slide and decided I'll wait for my 2Gb in 01 September. To my surprise nothing. And I called in and I was told the data was loaded and data was used. My argument is that I have been checking my balance since the 1st and my balance never changed or data was never added. And they are insisting that the data was loaded.. But how come I didn't see it at least even if it's not the whole 2Gb but my data balance should definitely change. So I would like to my data that Is owed to me or get my money back. The consultants who helped me were no help at all.