Disconnected Service on Prepaid.

In May, my number was moved from contract to prepaid. Since then I have not been able to use data. MTN has been pathetic in their support. In the past 2 months, I have had one agent call me for clarification on the issue but otherwise the agent chat gets disconnect or support emails are unanswered. I have bought data to test if it has been working (as they said they have resolved it) and the data expires before I can use it. This is a massive safety issue as I cannot use my phone outside of WiFi. Massive waste of money and time.