Shocking bills and terrible service

<p>My phone contract with Vodacom usually does not exceed R2000 per month.. Over the last 2 months, my account went up to over R4000 thenast month to over R7000! How can this be possible as I have used the phone the same as every other month?? Now suddenly it goes up so drastically?? I have queried it and they are threatening to now disconnect my service.. I run a business from this phone and can't afford to be down. I have requested that they send me a detailed report proving that I have used this data and where it was used as I believe this is impossible! I am still waiting for the report.. The consultants are not very helpful.. My contract is coming to an end soon and they won't allow me to upgrade until the account is paid, well, I don't think I will be renewing my contract with Vodacom. </p>