Unfair customer service

FNB REFUSES TO REFUND ME MY LIFE COVER DEBITS, I DISPUTED THE FIRST PAYMENT ON APP AND RECEIVED NO CONFIRMATION OR ANYTHING, IT DEBITED AGAIN TODAY AND THEY ARE TELLING ME THERE IS NO REFUND YET THEY TOOK THE MONEY TODAY!!!! This just feels like a big **** !!! SO I JUST GAVE FNB MONEY FOR NO REASON???