Billing me R1300 for data used, cannot explain it

Last month my account with MTN was R1200, this month R1300. I phoned and requested a report to see what it is that is using all this data. The report was just sent through, but there is websites that is used 1.02 in the mornings. Doesn't tell me what websites. I phoned the customer care 808 number and asked if they can help, they told me to phone the technical department 1555 number, they told me to phone 1761 number and again I was told to phone 808. I explained that she is the 4th person I'm speaking to and she placed me on hold and again I got through to customer care. Twice it sounded like the phone was dropped. I phoned from land Line and spoke to Marelize Swart and she again told me to phone the technical department, I told her that I have phoned them already and was told that they cannot help me. She placed me on hold and Albert came on the phone and asked me to email the reports to them which I did from my work email and personal email. They waited a few minutes and told me that I must phone them back later. So who the hell am I suppose to contact in regarding my cellphone report that is CLEARLY not min. Are MTN's employees useless? Just *****ing my money??!!!