Data account double last 2 months

<p>My monthly bill for account I ********** used to be between R300 and R500. In November, a debit order of over R2000 was taken from my bank account, apparently for data usage.</p> <p>On the 30th of December, another debit order of again over R2000 went off my bank account, once again for data usage. I have checked my cellphone's data usage, and there is no way that that many data was used. I went to the bank and reversed the debit order until this is sorted out. I have sinced tried to call customer care (after 1 hour waiting I hanged up), tried the call me back option on the website and am still waiting for the call. This is unacceptable service from vodacom. I also know of many people that were overcharged on data usage in the last 2 months - maybe it is time to switch to another service provider? </p>