Vehicle Finance Decline even approved by other banks, basically a good middle finger!!!

I recently app**** for vehicle finance at Wesbank, and as FNB client I thought that I would easily be funded, as I have a good credit record and score, and my salary vs expenses is relatively substantial? To my surprise all 3 other banks have accepted my application and approved it except Wesbank??? I had recent queried 3 weeks back a Telkom account that I had paid up and settled in all 3 credit bureaus i.e. Transunion, Experian and Compuscan as correcting it in one doesn't mean all are also corrected. Transunion resolved the matter on 5 June and provided with a written letter and a new copy of credit report showing that the account has been removed. I submitted those docs and a current Experian credit report showing my credit score great, as part of vehicle finance to all the banks and they could approve the application. When I enquired from Wesbank why it was declined the agent didn't seem to be interested and merely stated that it was because of the Telkom account I queried, so I explained to him that account was later resolved by Transunion and I could send him the Dr ocs and merely told me to give such docs to the dealer to submit on my behalf with the reverence number for the application WBM ********** 3, which still makes no sense to me? I think this is possibly one way Wesbank/FNB is giving me the middle finger and telling me to take my business elsewhere?!!! And I'll gladly oblige???!! Thank You for Nothing!!!