OVER CHARGED FOR DATA !!!

I went on Holiday for December (1 week in total) at that time i received sms's stating that i reached charges on my cell of R25 000.00 (which i highly doubt is correct as the first sms just came through as that amount no calls nothing was made but my bill was already on R25 000.00 i then decided to switch off all roaming and just use my hotels wifi. When coming back to South Africa recieved bill that my number and my husbands number was in arrears of R240 262.91 (THIS IS INSANE) I then phoned Vodacom and up to date they still can't help I asked to give me a detailed statement of what i used, and they VODACOM said they cannot do so, they also said i must pay that amount of R240 262.91 i used the data and i must pay. My business lines are all off again, i think the service they give is terrible i will not recommend this service provider to anybody as they are insane with there data charges and nobody can give you any answers form December 2014 up to April 2015. Please if someone can help, i travel allot over December but have never been charged with charges like these, this is ****************!!!