Defamation of character

I am very upset with Absa credit card division!!! I was approved for a credit card on 15 August 2017 and i fetched my card from the chatsworth branch on 26 August 2017... Before leaving the branch i was told to call credit card division and set up my debit orders and debits dates etc which was confirmed and in order before leaving the branch. I received a statement stating that i need to pay an initiation fee which was R160.00 so to my knowledge i would have expected my debit order to go off on the set date. However the debit order did not go off so i assumed seeing as i never used the card it would go off in September alongside with my first installment as i only utilized the card on 01st September. Today i received a call from Absa saying that i am in arrears with my credit card as i have not yet paid the R160,00 and i explained to them that i did set up a debit order and the lady who assisted me said that she does see that the debit order was set however they did not activate it... she also acknowledged that it was a mistake on their side. My issue is that she told me that i cannot use my credit card until the debit goes off and that this has been sent to credit bureau so until then i have a bad ITC!!! Which is not fair! i have money in my account and i have never ever had a bad ITC reflect on my portfolio ever! this is the first time and its upsetting because i have worked very hard all my life to maintain a good credit rating!!! and this was not my fault I called complaints and they said to me that my card is still active and that i am not in arrears, only to get a second call from credit card division saying that my account is in arrears... so who do i believe and what do i do? Because i am not in the wrong here... i am extremely disappointing as i am being accused for slow payment!!! This is my reputation at stake! a good reputation i have taken years to maintain!!!