forced to pay for bundle that i did not use

I received bundles on the 3rd of august which I only used on the 3rd for few minutes and early on the fourth for few minutes, when I tired to log on the 4th I was blocked and when I phoned call centre I was told I finished all the bundles and went over with R1000 which I find strange because I only used the bundle for few minutes and the lady that I first spoke to, said she is logging a query for me and I will be contacted in 48hrs and that she herself will call me back the same day and give me my call reference, she never did. and when I phoned the following day the lady I spoke to was very arrogant when I enquired about limit that was set on my contract for R10.00.i am expected to stay the whole month and keep wondering what happened to the bundle while they going to send me invoice only month end.no one is able to provide me with detailed statement to get clarity. i also requested the contract to be cancelled as is expiring September and I was told somebody will phone me back and nobody did. I feel the whole thing is just unfair. does mtn want to take as much money as possible from me now that the contract is expiring? No one is interested in my complaint