Impossible to change debit order date/ no answer at call center!!

I have a personal loan with FNB and the debit order for this loan as always been the last day of the month. 2 weeks ago I did an advance on my account the consultant advised that the system as automatically chosen the 25th of each month for my debit order… I only get paid on the last day of the month! The consultant advised me to go into the branch…Which I have done over the weekend only to be told that only the call centre can change the debit order date. I have than called back on Saturday and was told that I need to email my request to ********** I have done this and received a mail asking me to forward bank statements, letters etc. Another upsetting fact is that I just received an sms from Fnb stating that my debit will be going off at the end of May 2018 the consultant advised me that my next debit will only go off end June. I have been trying to get this date changed for over 2 weeks now and have called the call center over 20 times but your’ll are always experiencing high call volumes I am at work now and can only speak at 6pm which is outside your working hours. Please contact my husband Mr Y Naicker on ********** 910 if you need any information or you can forward me your direct contact number…..

I am a very disappointed client and fed up at this point!! I would like to get this date changed and for my calls to be played back to the consultant telling me about when my next premium will be going off

Regards J Naicker