Dissatisfied customer service from MTN

I bought 2 weekly gigs of data for R99 however within less then 24hours the data I bought couldn't connect to the internet, however it was still reflecting on my balance. I called MTN three times about this query. The first time I called I was told that I bought Whats App data only which was untrue because it was internet data,during the course of the call I told to call after 08:00 because the technical support team was not so they couldn't log a ticket at that time. I called for second the time, the agent I spoke to said that it was error from their side alternatively I will be refunded the R99 that was used and how receive feedback in less than 24 hours.

I waited the whole day the following day but no feedback was provided. I called for the third time I was informed that I will receive feedback during the course of the day. I called again for the fourth time and I was that it's because I have running apps in the background which I don't because there are not automatic applications running in the background and I ensure that all applications are closed once I am done.