FNB DONT CARE ABOUT THEIR CLIENTS

I regret the day i decided to bank with FNB, they are a bunch of ****** and the most unreliable bank ever!!!!!!!! i called on the 11th of March to inform them that i bought electricity twice by mistake, and i asked them to reverse the 2nd payment...i was instructed to fill inn dispute forms which i did and sent on the 11/03/2021, i got a confirmation email with REF NO. i have been calling them since morning hence today marks the 7th working day and i haven't received any form of communication or my money back, i have been calling and their consultant have been taking me from "pillar to post"... i am so sick and tired of this poor and unprofessional service, ALL I WANT IS MY MONEY BACK