FNB have no loyalty to their clients

Since FNB doesn't respond to replies I will post again.....

I'm posting this to show how useless they have been to me, after being banked with FNB for many years with never having bad credit surely it is in their best interest to ensure customer retention by offering a better rate on a credit card but nope not with them. I was given a very high credit card rate 3 years ago and accepted this and advised the agent that I want this reviewed and that i received a better offer from another bank, they requested that i have to send proof of this for them to request a change. I am not obligated to show FNB anything i expect as a customer to have this addressed and to not have to show proof. Nobody has gotten back to me after they said they would and am on the verge of leaving FNB as their customer engagement is terrible.