Bad service

I had the most terrible service from FNB Credit card limit application. I spoke to Mathapelo Selogeloa who initially told me that they take 24hrs and I advise her that I need to be told if this will happen on 11 April as I need to travel out of the country for a funeral. She promised she will call back she never did. I followed up on 12 April and spoke to Busi around 08:15 who advised it shows it will be actioned during the day. I called again at 15:11 and spoke to Muzi who advise it will processed before end of business. at 16:43 I spoke to Zanele who checked and advised that all team leaders had left. She then put me through to Mathapelo who advised me that they had all gone and they don't work on Saturdays. How does FNB confirm they will do something and not do it. I have lost a family member that I need to bury and they toil with people's lives like this. I will be moving all my account to other banks