Data and airtime disappearing at 10pm

I checked my data and airtime balances in the afternoon and I had airtime and about 600mb of data of my gig which normally lasts me the month. All of a sudden I checked my balances in the evening and I had no data and no airtime and on top of that I get an SMS to say your Blackberry services has been submitted. I have never used or owned a blackberry in the past 3 years. I sit on the phone with vodacoms useless staff this morning at 8:30am on the 26/09/2015. To get told that I have used over 600mb while I was sleeping and that I activated the blackberry service. The fact that this is all possible surprises me. Vodacom are the biggest *******, they just ***** your data, ***** your airtime, and I the customer must just continue to fork out because they are too big for the little man whose giving them the business. After being with them since I was able to have a phone. I am now Sadley going to cancel my contract after this has happened to me. I am trying to run a business and how can I when they take all my data and airtime. Nice vodacom thanks for the worst service I've ever had.