Bad Client service and assistance

Ive been a client for many yeard of Standard Bank. Unfortunately i had to declare myself insolvent abot 7 years back. I have since paid what was due, also had to pay additional money to clear my name. No ive been cleared by the high court and are debt free. Ive app**** for Vehicle finance through my own bank and have just received a reply" Your application for vehicle finance have been declined, and that is the final and decisive answer. No reasons or plan to assist. Is this how Standard bank treat their loyal clients. Now im considering taking my banking to another bank as well as my wifes 2 accounts with the same bank. I also have a credit card with them that i pay every month without fail.