Debit order issues

My debit order did not run for the month of December 2017 and Feb 2018 for no explainable reason, I called and was told to pay via EFT or cash of which I did R499.00 on Jan 10th. I received a message from my bank on an unpaid debit order from 8ta of R800 and odd rands on 16 Jan 2018Again no reason as to why that happened, my bank will now charge me R150 for this unpaid debit order. I am asking that my ITC records be updated as being in arrears for the month of December Jan and Feb and March not is not a true reflection and not my FAULT. Also please update this ITC of unpaid debit as your FAULT and not MINE. My debit MUST be the 25th of each month. I called in today after another debit went off for R1296.01 which was unpaid due to insufficient funds and left my bank account in a minus status. I am really tired of this mess guys this is a 1st time i took a contract with your company and the last time due to this. I am going to pay this R1296.01 via eft on the 20th of March and expect my debit order to go off in April, well when i spoke to Nosiphiwe today that is what she said to me. case no: ********** 3. And i want to know why the debit order for December 2017 and Feb 2018 did not go off?