Unathorised Installment change

<p>My installment was changed without being notified and when I called the FNB Agents Im told the system changed it and it cant be changed back to the original Installment.My account is not arrears.When I visited several branches they told me that there were vague remarks regarding the installment change.This can not be right as I signed a contract which was based on my affordabilty.</p> <p>I thought being a private banker came with perks but to my surprise it has not helped. Bad service.....Im even thinking of changing banks because of this.</p>