Poor interest rate

I app**** for a personal loan from FNB, thinking that I have banked with FNB for at least 8 years I thought they would be concerned about their customers. Only to discover I was going to be given such a poor interest rate by the bank. I was very unhappy and walked straight out the bank to Nedbank, did the same loan application with the same details that were given to FNB, and was offered a interest rate of 8% less than what was initially offered by FNB. I do not even have an account with Nedbank and they are willing to help me. I am extremely disappointed with FNB as they said sorry they cant do anything as that is what the computer tells them. I will be moving my account, my fiance's account and business account all to Nedbank as they are really helpful and actually want to do business.