Debit Orders + Customer Service = Terrible

I have been a loyal customer to Nedbank for over 15 years and never had issues with banking, debit orders or anything related to my banking. My nightmare started in January when Nedbank decided to change debit order dates as they see fit and after many explanations and calling to get this fixed it still doesn't get resolved and now its affecting my good credit standing when a payment does not go through. My recent nightmare is one of my debit order dates that was changed to mid-month which I have never authorised for and after calling their collections department, raising my frustrations I had to authorize the new correct debit order date and was assured this problem has been fixed and won't happen again until today I received a shocking SMS that there was a debit order going off the account leaving my balance in a shocking state. I am fed up for calling month after month getting this fixed, and be assured it has been fixed and apologies which are no longer apologies and it seems I need to waste my time, my energy, my call minutes to speak and sort this issues out again knowing that next month the same cycle will repeat again. I am utterly disgusted and disappointed in Nedbank. They are quick to provide service and offers but fail to listen to the customer and fix the issues that should NEVER be a repeat issue. I am done being calm and talking and explaining on my calls every month and done being repeating the same issue over and over. I am getting to a point where I will move my entire banking option to another bank that actually values their customers. Think twice before having debit orders with Nedbank