Very angry customer.

Ive bought 30G getting 1G every day for 30 days. I've bought it on the 25th of August, but I've only received it for only 1 day which is the 25th,,ive tryed calling them no help, the lst time when I called, they told me to wait for my matter, for 7 days, they still checking my problem.. My R300 for data is gone, I have reports to do daily but have to get extra cash to buy data, such a big company like mtn, can't fix a small matter like this... Oniccah