WesBank FNB - frustrating service

Terrible first-time finance experience with WesBank Islamic Financial Services. I've app**** for a car finance through Fury Mazda Woodmead dealer which was approved by WesBank, however, and due to unsatisfactory and poor delivery time, I had to cancel the Mazda deal (I've never accept or signed any iContrac, where OTP was sent at the last-minute by agent after cancellation decision is taken). Yesterday I tried to apply via (FNB For Me) tool and I've got an email from WesBank Islamic Finance informing me that my approved Finance is still valid till next week?? I've never heard of this deadline before not from the Mazda financial services nor form WesBank. I am shocked by the practice of assuming (all clients are finance-experts but not naïve?). I've been even urged to grant a new approved deal from WesBank approved dealer. This is frustrating as communication between the bank and the client should be incorporated from the beginning instead of relying on lazy dealer representative. I've been banking with FNB since 2009 and if this is how finances work for a first-timer then don't blame us migrating to another service provider where (how can we help you) is more than logo slogan. Professor Irhuma