FNB Don't help clients

My wife are banking with FNB now for more than 18 years. Every month we get offers to moved up to a higher level account. Last year we app**** for futher home loan and was granted on condition on approved building plans. We sorted out the building plans and got everything approved. With city council taking so long a time went past before everything was approved. When we contact FNB to state that the plan is now in place I was told to re-apply. Since the time past both of us also received increases at work. We went the route and got feedback it will take 3 to 5 working days. After 2 weeks we received no feedback. I phoned them and was told they only received feeedback that morning and wanted more documentation. We send them the documentation and after a week notify us it is declined. Our loan are with FNB for almost 5 years and never went in arrears. Not one month was the home loan not payed. The excuse FNB uses s we cant afford it. I think my wife and I know what we can and can't afford. Maybe it is time to switch and give our bussinnes to a bank looking fot clients to help. FNB really goes out of their way not to help.