PATHETIC SERVICE FROM FNB

I NEED TO KNOW WHY A TRANSACTION THAT GOES OFF EVERY MONTH ON MY DEBIT CARD GOT REVERSED THIS MORNING. THIS IS A REGULAR TRANSACTION THAT GOES OFF ON MY DEBIT CARD EVERY MONTH. NONE OF THE AGENTS I HAVE SPOKEN TO CAN TELL ME WHY IT GOT REVERSED. THEY KEEP TRANSFERRING ME TO THE ***** DEPARTMENT ***) BUT AFTER BEING ON HOLD FOR A FEW MINUTES I GET A VOICE SAYING THAT NO ONE IS AVAILABLE TO TAKE MY CALL AND THE CALL IS TERMINATED. I ALSO TRIED THE SECURE CHAT ON THE APP BUT I GET NO RESPONSE THERE EITHER!! THIS IS ABSOLUTELY PATHETIC SERVICE FROM FNB!! I REGRET MY DECISION TO MOVE TO FNB FROM MY PREVIOUS BANK