Revolving Loan

Good day,

I have phoned Fnb revolvong department Monday and Tuesday not one of the consultants could assist me in answering my questions. When reading the terms and conditions of the revolving it clearly states when paying 15% the available balance would reflect. I have transferred money to that account more then 15% and still the available balance is not showing this has never happened to me if you cant assist or provide me with good service then I guess i would have to move to another bank which will bw able to assist me.