Vodacom is steeling my money.

My phone soft locked Saturday afternoon after I exceeded my voluntary call limit. I added an extra R300 Sunday morning to unlock my phone. AGAIN Monday morning my phone was soft locked I added money again, nothing happened. After phoning 3 times and adding on money every time without the phone unlocking or me using the phone it unlocked but after an hour the phone locked again. I have been phoning VODACOM trying to help me unlock my phone but they just keep adding on money each time. I even went into VODACOM shop so that someone can help me understand why my phone doesn't want to unlock but keeps adding up my usage amount. Vodacom advised me that it is my phone that keeps on updating. They also tried to open my line by adding on money and still nothing happened. I phoned the 082 111 line twice, where they also just keep on adding money to my account and still my phone is not unlocked. Excluding my R1, 100 call limit, I went from a R300 extra usage to a R1500 usage without my phone being unlocked together with a message saying I have exceeded 50% of my voluntary call limit.<br> HOW IS THIS POSSIBLE???!!!! The service at this stage I find absolutely shocking!! This is just NOT RIGHT!!