Ridiculous Charges!!!!!

Ive been a Vodacom customer for as long as i can remember, and now I find myself in this absolutely ridiculous situation. Slapped with a bill of over R4 000 that is clearly incorrect for apparently going out of data bundle rates. But wait for it... im being charged for the 1GB data bundle i bought but was not activated and this is why im being charged for so called \out of data bundle rates"The 1 GB data once off payment i s clearly on the bill but there is no activation message and no one can tell us exactly when the bundles for august was bought"