Out of data Billing when data is loaded.

I been with Vodacom for about 6 years now and the recent stretch for the past month makes me want to forcibly cancel my contract with Vodacom and go else where.<br> <br> I am getting billed this month a extra 500 rand to my bill for out of data usage. I loaded data on the 17th of February I received the message that it is loaded and it is safe to use. The next morning I looked if the data was showing and it did not worried I called Vodacom and the recording on my call does proof that they said it is fine my data is showing on their system and its safe to use. I looked again and was not showing not feeling safe I called again and they assured me it is fine to go ahead and use data. Two days later I check my bill and it is now 500 rand more than what it was.<br> The tipping point with Vodacom comes today 9th of March I called in early in the morning to load data again receiving a Message that the data is loaded and was showing from there I finished my work sent it to my supplier and my data balanced remained the same as after it was loaded, again I called and they assured me it wont happen, this morning I check my balance it is 300 Rand up from what it was where it should be a fraction of it.