Non Disclosure

I have a small business which consist of 3 staff. For the past 5 years we never used more than 20g data. Last month I received an email saying that 80% was used 28/07/2015. I queried it I was told that I should not be concerned. I changed the wifi password thinking that someone is hacking our system. On Monday the 03/08/2015 we received our new data for the month, half the day we had no service. 2 days later we received a notice that we used 10g. I phoned telkom and I told them that we only use our our data for sending and receiving emails and according to our computers it gives a breakdown of the usage of data and it is no where near what was used. I phoned telkom and I complained and I got no joy. I requested for a breakdown of data usage they told me that they dont have that facility. Today I got a message the 75% for the data was used. If this here is no transparency then it is *****. This is the only way that Telkom can force their clients us get unlimited data. This is scary really frightening that innocent people are ********** .