Complaint over discriminatory behavior & disapproval of application without a valid basis

I APP**** FOR FINANCE AT 'WESBANK' VIA FORD-POLOKWANE. ASSUMING ALL OTHER REQUIREMENTS WERE MET IN MY APPLICATION, AS I GOT NOTHING TO THE CONTRARY, THEY DECLINED MY APPLICATION BECAUSE MY PASSPORT'S EXPIRY DATE IS YEAR 2020 -WITH A PERMIT VALID FOR 4YEARS. HOW UNREASONABLE!!!! PASSPORTS ARE RENEWABLE/REPLACEABLE WITHIN A DAY, A WEEK ETC, JUST LIKE DRIVER'S LICENSES. WOULD THEY, FOR ARGUMENT SAKE, DECLINE ANYONE FINANCE BECAUSE THEIR DRIVER'S LICENSE EXPIRES IN A MONTHS' TIME?? AFTER ALL WHY DO THEY SURMISE THAT MY PASSPORT WOULD NOT BE RENEWED, LIKE ALL OTHER PASSPORTS I HAVE RENEWED BEFORE?? THIS IS UNFAIR BUSINESS PRACTICE & IT IS SIMPLY DISCRIMINATORY.