A loyal disappointed client

Firstly I need to mention that I am a loyal client of FNB for 11 years now. My pleasant perception of FNB completely changed today when I went to their branch for a personal loan, I was shocked to discover that I would be charged a whooping 25% interest rate. As a result I'm considering applying for loan in other banks and also leave FNB. I cannot be loyal to a bank that sees no problem in charging their client of over a decade some ridiculous interest rates. I'm very disappointed in FNB, from the best bank in my books to the worst in just 10 minutes.