Vodacom billing

Just over a week ago I loaded an extra data bundle on my data contract. After I submitted the request, I received an error code and after about an hour I couldn't see that it was loaded. I then phoned in to ask what has happened, and I was told that it didn't load, so the call centre agent loaded another 3GB bundle.<br> <br> Thirty minutes later, both bundles were loaded and I requested that one must be taken off. Now this has been done, but I was charged R378 for the bundle instead of R189. I have requested that this be rectified 4 times and every time I am told it will take 24 hours to reflect, and each time it hasn't.<br> <br> Vodacom, if you carry on with this shocking service and don't resolve my request before 12 pm tomorrow, 30 June, I will move my 3 contracts with immediate effect.