Cell C would rather lose me than help me

Between the 1st and 4th of December I lost 1Gig worth of data which just went missing. Usually a gig would last me a month and so I called Cell C on the 6th of December to query what was taking so much data. Helped by Technical support who told me the data disappeared and they could not account for it. He informed me that he has escalated the query and gave me reference *** with the promise of a call in 24hrs. Nobody had called 46hrs later so I called Cell C again and was told it's actually 48hrs so I gave them 2hrs and nobody called. Called them again two days later and was told someone will call before the end of the day. Nobody called. Loaded data again on the 11th of Dec and by 14th it is completely finished. I called them today the 14th and after being transferred from 1 person to the other was told I have to wait a month to get feedback. How do i load data in the meantime when it will disappear again. Agent at technical told me sorry I cant help you. I said to her then I have to cancel contract and port number she said ok. I called Retentions told them I am cancelling because of A BC they told me sorry and cancelled my contract. Nobody cares. I need a response today