Where is my data?

Took out a new contract a month ago. On the 1/10/15 received my minutes and 75mb. Contract says I must get additional 500mb. Reported it on 1/10/15, ref ***8. Call centre admitted to me that it is a mistake and promised to get back to me. I phoned again and was told sarcastically that it's 72 work hours before someone would phone me back. Waited. Still nothing. Phoned again. And Again. Ang again. The call centre can just write emails and promise that someone would phone me back. They even tried to convince me that I used the data! This is shocking that this company is trying to lie about 500mb of data. I phoned again today (almost a month now) and was promised again that someone would phone me back, maybe within 42 hours. Really? After a month!! I want my data Telkom. I will continue to phone and report this to every other forum and even take Telkom to court for breach of contract. Yes, for 500mb. You not getting away with this. Sort it out. I am just warming up now.