Very Poor connectivity and and Customer Service

I upgraded my contract on 10/12.2018. Got 30Gb data free. Got home and tried to use the data. NO NETWORK (Emergency Calls Only). Logged complaints ( ********** 2 & ********** 6). Tower was "fixed". Voice calls now work but still no data coverage. Just phoned "Coverage dpt to log complaint again. Asked about data that I lose when it expires ? They put me to Customer service. Was told Nothing can be done about loss of data. Asked to speak to supervisor. Got put on hold for 5 minutes. When the operator came back online she said I cannot speak to a supervisor. I said I'll hold until I can, she said I may not and must call back later and disconnected the call. How do you use data if I cannot connect to the internet due to MTN uselessness? Now I must buy Vodacom to run my business and I am going to cancel ALL my contracts with MTN as soon as they expire as I cannot run my guesthouse without being connected to the internet.