FNB service down the drain!

I app**** for financing at FNB on Tuesday, 20 March. The lady at the bank promised to get back to me in 3 days. It is now 10 days and she never came back. I need the financing urgently as the seller kept a truck for me. He now thinks that I am the one keeping him waiting. I phone the bank every single day, getting the same answer, "I will call you back this afternoon/in an hour...." Yesterday, on day 9, I spoke to the bank manager. His answer? You guessed it, "I will phone you latest at 14:00." It is now nearly 24 hours ago.... Nothing! This is not the first time I dealt with the same bank and the same bad service. Time to change my bank? If this is the kind of service you get from your bank, why stay on?