poor client service

As far as I know your bank can do a pre-approval on a vehicle for you, but according to my bank it is something which is not possible. the private clients department has poor service and reply. FNB in general has bad service as I have been struggling with my notifications for a while now and they do nothing to sort it out. Plus when I swipe my card the notifications always says reserve for purchase and then suddenly a week passes and I receive like 10 sms's stating the money went of my account now. This has not been sorted out. Getting hold of a private banker takes ages and then they notify me that I will get someone else handling my account but no one gives me a number or anything for that person. Really poor service from FNB.