Not given what I am paying for - No feedback

On 1 Oct I logged a case no.***5. It has now been two weeks since this case was logged and after numerous responses from Telkom telling me that I would receive assistance shortly - I have still not recieved any assistance. As per my contract (also confirmed by the call centre) I am meant to receive 500mb per month. On 1 Oct Telkom only loaded 75mb, thus they have not given me what I am paying for every month - this I consider a breach of contract on their part.<br> <br> It is now half way through the month and I am still sitting without data that I have paid for. Once I go over the 75mb, they will start charging my account for using more than the \contracted"data amount"