Made to feel my custom is unimportant to FNB

I recently app**** to have my card limit increased by a relatively small amount, it having been at the original amount for over 10 years. I was generally treated very brusquely, experienced being transferred between numbers and a time wasting when I first app**** by telephone, then got an SMS that wasn't too specific, failed to get a response to a question I asked in an email and finally found found the rest of the process very time consuming and bureaucratic. Then I got granted a limit which was below what I had asked for and was told I could get over the phone (provided I could prove what I had stated, which I did) I just gave up and took the lower limit you finally gave me so as not to have to go through any more pain