will cancel all my contracts if this is not FIxed

In December 2015 in noticed that my Debit order was much higher than before for tel nr ***. I phoned Cell C at around 11h00 in the morning on 31/12/2015 from my number ***. I phoned Cell c and enquired why the account is so high, the gentleman explained that data bundles were purchased. I then asked him \ How do I avoid this in the future ? "He said by putting a limit on. He said that the minimum limit is R50 and I asked him to do that immediately. This week - to my surprise - I received another account of R1593 for this number. I sent an email to customer service enquiring this. Someone phoned me and could not advise why the other agent I spoke to on 31/12 advised me one thing and now something else occurred.<br> <br> I have 4 contracts with cell c and I will cancel each one of them as they come to and end. I don't need a service provider who take a lot of money from me and give me wrong information.<br> <br> I will also reverse this debit order of R1593 and only pay you the normal contract fee for this number<br> """