Pathetic!

About a year ago i complained on here and vodacom to this day have not explained to me what happened they just gave me a credit on my account, I presented a seminar at work left my wi fi hotspot on by accident but my account went up by 10k in that time according to the vodacom app. The problem is i didnt present from the wifi everything was pre uploaded at work and the presentation was done on the network at work. there is no reason at all why my account could go up R10k in a few hours!!!! I always pay my account but this is ridiculous. I do have databundles on my phone. Phoning your call centre is never a joy. from last time i had no explanation eventhough you at least credited my account thanks. When you phone back you have to explain the story many times because its a different agent every time and they always tell confliting stories. I asked them to come back to come back to me via email because i am frustrated with their cal centre they never did.the stories are always different they cannot explain the account to me they say used data to the values of 10500 but I had data bundles and this happened before all I want them is too explain the account to me.