Data roaming data - appalling service provider

<p><br />I have crossed border to Botswana on the 4th of May at approx 13:00. I received a confusing sms on the 5th of May @ 16:34, which stated that i have reached my monthly limit of R11400 and my line has been suspended (for 1 day). I couldn't make any outgoing calls. My wife phoned cell c help desk on the 6th of May @ 13:25 when we returned to SA to find out whats going on. The lady informed her that i have used data and my account is R25000. She also stated that even though the data was not used, the setting on my phone called mobile data should have been switched off if i didnt want these costs to occur. I am very troubled by this seeing that even if i didnt use data, i must pay, secondly receiving an sms to say my line has been suspended (amount: 11400) on the 5th and still occuring extra costs (R25000) after my phone has been suspended???? Please see pictures attached to show my usage of 168,25 MB that resulted to R25000 bill</p> <p> </p>