EVERYONE OUT THERE CHANGE FROM VODACOM

on Tuesday evening my phone got soft locked by Vodacom as per the limit I myself set on my phone. I have a call limit set up of R120. 17h00 that afternoon I made a phonecall to a friend and I ran over my softlock (which is ok) and when the call ended my phone was soft locked. I called Vodacom 20h02 to lift the call limit. I was asked to what I would like to lift the limit to which I asked the operator what my usage is on currently. She told me I was currently on R193. We lifted the call limit to R250.00 and a confirmation sms was send to me from Vodacom.Wednesday morning my phone is locked once again however I was on wifi the entire morning, and made no phone calls. Why is my phone locked. when I phoned Vodacom the guy and his team leader both could not assist me. Even after telling them to pull my voice recording from the previous night. I tried to go on Vodacoms website where I am registered to pull proof that I have not used my phone and the website is not working. Now about 5 min ago I am getting a sms from Vodacom telling me once again I have used 90% fo my call limit but I have not used my phone! WHAT IS GOING ON!.You are billing me incorrectly and my DATA is disappearing!