FNB not there to help you

Been using FNB App for many year , i notice i cant change my credit limit , i was now advice via a very frustrating app message service , that they have not link a administrator to my business account , as this was not done when i open the account many year ago and they now have a new system without no communication or noted form FNB, no we need to visits branch that i have not been in for year to make change to something the brake