IMPOSSIBLE TO CONTACT ANY FNB CONSULTANT WHEN YOU NEED HELP!!!!!

can someone from FNB please assist, i have been trying to sort a qery out since February this year and cannot get any positive feedback. I last spoke to Abdulla which was on the 15/02/2018 @ 3:40pm and since then i have not had any responses. i have an overdraft account with FNB and he whole query was discussed with Abdulla where i was querying the intereset that was being charged since 2016 on an overdraft account which i voluntarily put on debt review. My overdraft limit was R5000.00 but now i have a balance of over R10000 yet the debt review company was paying towards this overdraft monthly since 2016 . I am trying to contact FNB on all the numbers provided ********** 166/ ********** 000 and no one picks up...its just goes to rating the consultant when there is NO consultant that picks up the call. YOUR SERVICE IS RIDICULOUS. CAN SOMEONE FROM THE RELEVANT DEPARTMENT WHICH DEALS WITH OVERDRAFT PAYMENTS PLEASE CONTACT ME WITH A SOLUTION TO MY PROBLEM AS I HAVE BEEN PATIENT FOR LONG ENOUGH AND THIS IS VERY FRUSTRATING.