FNB: poor service

I attempted to increase my credit limit on the banking app. There was an option that specifically said do not upgrade my account just increase my credit limit, which I picked. I was then automatically upgraded and a credit card is to be delivered with the same limit. I have been trying all day to get hold of someone from FNB that can help but with no luck, you get an automated voice that is of no help. Been a client since ‘98 with FNB and this is my third bad experience with them this year, amazing ebucks but shocking service over and over.