Poor customer service

I called last month and spoke to Bongani Radebe, I arranged for my debit order to go off on the 27th of every month instead of the 1st. I also arranged to pay more on my home loan which Bongani said he has captured on his side. I am getting non stop msgs from Standard bank saying i have insufficient funds?????? I have the complete mail trail of our agreement.I have called Standard bank atleast 4 times in the past week to explain my story,And to date has not been captured on your system correct.This morning yet another sms we are behind with our payment. This is really harassment,I have also been begging for my statements for 2 months and still to date nothing.