unnecessary double payment

I am very very disappointed at Telkom. I enrolled for a debit order on the 5th of February 2016, thinking that the debit order will go off on the 25th of February 2016. It didn't go off as planned, so I phoned the call centre on the 27th of February 2016 and spoke to Valencia, and she advised me that the debit order will only go through at the end of March, seeing that it was processed in February. She even assured me that I should proceed and make a manual payment as the debit order will only be loaded for deduction on the 25th of March. I continued to make the manual payment, thinking that there will be no dedyution but to my surprise, a debit order for an amount of R420.55 was processed on my account for the 2nd of February 2016, which alone is actually not even the date I had agreed upon. I advised a Sinethemba who loaded the debit order that I want the deduction to go off on the 25th of each month but for some reason the debit order went off yesterday. I phoned the call centre today and spoke to Sinethemba Nxele who wasn't too sure why the debit order was processed yesterday as she also mentioned that the D/O should have gone through at the end March. Keep it on credit for now