Vodacom DATA!!!! What a joke!!

The exact same thing happened to me, charged me R12 000 excluding VAT for data between 12 midnight and 7 the next morning, that is 7 hours!! while I was sleeping! According to Vodacom that is absolutely 100% correct!! REALLY!!!! I have Wi-Fi at Home and never have any applications open in the background.. Now they are offering me a R9000 excl VAT Credit out of Goodwill!! My total data is R13 100 for a few days, if they haven't billed all that incorrect data that one night I never would've ran out data to begin with!!! Now I still need to pay R4600 just for data excluding contract charges due to their mistakes!! I want a full credit on that data - I'm struggling since the 3rd of January!! imagine Vodacom does this to 1000 people at avg of R10000, that is R10Million !! They are *****ing from their loyal customers!! Facebook is full of complaints, not that I'm suprised!! I've spoken to Mynhardt Abrahams in CIC which is absolutely certain of himself, and was of no help to me!! Just kept going on about how it's possible for me to run up a bill like that, after I kept assuring him that is not the case!! His Supervisor Sheron Naidoo was supposed to phone... still nothing!! I will not leave this matter here!!!!