No Customer Care - Billing Query Since Nov 2015

MY average Bill has been R1500 for the past 24months (I have been a MTN customer for 15+ years) my data usage is always between 2-3G which I have always managed well. Then with no change on my part, my data usage shot to 20G? Which I insist is impossible?Anyone who would take the time to review my account will easily see my usage trend! In the meantime I have been billed in excess of R10 000 which has left me in dire financial situation and I can't find anyone to help me resolve this problem properly<br> <br> Nov 2015 went into store and was assured the billing problem was resolved.<br> 15/1 logged a query with call Centre REF*** Nombulelo Mxhonya<br> 22/1 followed up as there was no feedback - but they couldn't assist as they were offline<br> 26/1 Went into Stoneridge MTN was told they couldn't assist<br> 26/1 email customer care Ref***2 Phumlani Phakamile - her responses were delayed, generic & unhelpful until I asked to speak to her manger then she stopped responding<br> 1/2 Went into Morningside Store after 2hrs eventually spoke to Dushen Naidoo he requested URL reports but what I received was pages of coding and was told the billing was correct<br> 1/3 no explanation, no refund or disc on data?How