Telkom's debit order not a debit order

I have had 2 debit orders going through on my account in 28 days.<br> A debit order went through on 7 March 2016 and another debit order went through on 04 April.<br> The statement I have received from Telkom does not reflect the 07 March 2016 debit amount taken by Telkom.<br> On top of that , I specified on the contract plus in the Telkom branch that I want the debit orders to go through on the 20th of each month.<br> <br> Telkom debits money when they feel like it , not even on the specified dates and I do not know where to go to complain about this issue.