Terrible Customer Service! Ridiculous Interest Charges

<p>I was charged an extremely high interest charge in May, which I queried with FNB. The lady who assisted me wrote an email to the card service center and to this day I have still not had feedback from FNB, even after requesting feedback from them, as to why I was charged such a high interest fee as I never missed a payment nor paid too little.</p> <p> </p> <p>This service of theirs is ridiculous and they should have gotten back to me in 72 hours and we are going on almost 3 months now.</p>