Terrible service from FNB credit card department

I logged a complaint on 3 June relating to my credit card rate that was increased without notification or valid reason. There was a card delivery fee charged which should not have been done and the interest charged on my account differs from what is on my bank statement. The consultant, Natasha Adolph, tried to call me but couldn't reach me l. I tried to phone her on her number that she provided. I responded to her email with an alternative number. I phoned FNB yesterday. They advised the complaint has been closed! The lady also promised that Natasha or het manager will phone me back. No call to date!!!