False advertising

I have taken a contract with Cell C in October 2018. This contract was advertised as a 100GB wifi at R539pm with a 3 months FREE subscription. However Cell C went ahead and took a double premium from my account end of November. I went to the store where I took the contract and they where helpful but to no avail. Cell C simply rep**** “We are aware of the problem.” The guy who helped me said that they will look into it and my account wont be deducted for December, January and February. Unfortunately I had another deduction end of December. And already received my statement for January. Again we went to the store and the manager will be looking into the problem now. But why should it be such a hassle for a client to struggle with the provider. Taking my time to go to the store and sit there while we are holding the line for Cell C customer care. Not only does it take my time but now it has also thrown my budget afar. Yes its not such a big amount but for someone who is just starting out, setting up house and buying a car this small amount can be problematic. This is false advertising worthy of being brought under the attention of the Ombudsman as there is no interest from Cell C to attend to this matter.