FNB NB - Slogan should be "How can we NOT help"

I have been with FNB since I was about 20 years old, I am now 60. Due to rental income shortfalls I asked the bank for an additional Overdraft of R10000. It was declined. I have property on my name with no bond, I have a vehicle full paid for, I have been working in China to cover ends meet since 1997. The reason given to decline my request is totally unacceptable! NB - Slogan should be "How can we NOT help" I have a perfectly clean track record with them .. The service of the staff ( my personal banker ) were excellent. But really FNB I have now very bad feelings about you !!