No assistance in 6 weeks

I bought a data package end April 2015, and requested that a cap be placed on 3GB of data. May & June there is no problem. Then I get a bill for July of R10000 for data usage. After reporting it through MTN's website, I received no replies. For August I receive an account for R6700 for data usage. How is this possible if I have not used more than 2 GB for the last 28 months? Why wasn't a cap loaded, as I instructed Julien?<br> <br> After 6 calls on 1808 and 3 queries loaded on MTN-website, I still received no response. Went back to store to query invoices - Rowena assisted me, being the store manager. Promised to request all documentation and will reply to me. 2 weeks later when I visited her again, she still has not requested any documentation from head office, and just rep**** that I am liable for the amounts - no explanation, no questions answered, <br> <br> She apparently loaded a query again to request details of data used. Today is 2 weeks later - and no surprise - NO FEEDBACK YET!!! She is not available, or does not want to speak to me.<br> <br> Does MTN need additional money to pay the striking workers? Or to increase their profits after it took a tumble in Nigeria? They are *****!!