Debiting My Account ***

I took out medical aid with Bonitas the second week of December 2015, my first debit order was suppose to go off on the 01/01/2016 but due to the public holiday it never went off. On the 05/01/2016 I contacted bonitas call centre to ask wen are they debiting, the lady said my debit order was not loaded I must make an EFT. she then gave me FNB banking details, I struggled with the EFT it kept saying my membership was incorrect. I then called again, I asked her to do a special debit as am struggling, she then said they don't do special debits. I then called again on my third attempt, I got through to a guy who did not understand what EFT is, he then transferred my call to their website department. on my fourth attempt I got through a lady who then gave me Nedbank details to do an EFT, it went of successfully(06/01/2016). On the 08/01/2016 bonitas submitted a debit order after making the EFT. because the was insufficient funds in my account it lead to a unpaid debit, which costed me R100. The fault was made by Bonitas in that regard I need for them to pay that unpaid debit. I spoke to Angie Kota who requested my bank statement, but not has been done. Help