Debit order changed without my concern

<p>I have been a client from 2011, and it has never happened that my debit order be changed, but now, the system has miraculously changed my debit date from the 25th to the last day of the month. </p> <p> </p> <p>Now the same system sends me messages of my overdue account and possible disconnection if an amount of R520 is paid. Today, it has now changed to R1120.</p> <p> </p> <p>I am now being charged a fee for rejected debit order plus what ever the rest of the amount is.</p> <p> </p> <p>I have a 24 month contract with Telkom but I now know that after years of poor service, after my contract ends, I will not be renewing it. </p> <p> </p> <p>Telkom has the worst service ever!</p>