Data disapearing

On the 22nd September at about 15:30 unusually, all my data was used up on my phone. I bought another 100megs and that disappeared within 30 seconds, again I bought data and this too was used up without even being on my phone, and so it went on. My data roaming was off, as was the cellular data for most apps. I went to Vodacom in the Montclair building in Claremont who were so disinterested and told me to phone customer services. I lodged a data dispute at 5.30 am on the 23rd September. I was told this would take 10-12 working days. I had a few sms's to say that my complaint was being attended to, as yet it has not.<br> <br> Again, yesterday, the 13th October at around the same time in the afternoon, my data disappeared. I bought another gig and within a minute I received a sms to say that I was again out of data. My account is now standing at R2458 (it is usually just under R1000 per month). I have lodged yet another complaint and dispute with Candice at 16:00. She kept me on the phone for over 30 minutes and said she would call back once everything was loaded on her side. Nothing, as yet. Come on Vodacom - what is going on?