Paying double

I recently moved and requested a line transfer, Telkom can't provide a 10meg line where I stay now, so now they gave me a 4meg line, which is fine. I see on my last 3 or 4 bills I still get billed for the 50gig soft cap I had on my 10meg line. On investigation and phone calls, I got told that they can't remove the billing as I got an Explora from them, that's what Im paying off. Why must I now pay for the 4meg and the 10meg line???? I understand that I am paying of the Explora, but then bill me for the 10meg line, but provide me with 4meg uncapped line then, why must I pay double now because Telkom cant provide a service???<br> <br> Also refund me the 4 months that this issue has been dragging....