ABSA you cannot rely on them

I have been banking with ABSA for more than 40 years. I use ABSA as my business bank. We are trying to run a professional and honest business In November last year we did a cashflow forecast and based on anticipated foreingn purchases we identified the need for a temporary increase in our overdraft facility. We started the application process and were informed by our “bank manager” mr Malcolm Marais that our facility would be available by the 1st of Match. When we had tu use the facility at the end of March we discovered that the application was not even processed. Can anyone rely on this bank? Can you run a business using this bank?