Poor FNB customer service, re occurring issue

I’m so ****ed beacause this re occurring . FNB debited all my income into my credit card without my concent . Now this amount hasn’t reflected for reversal and my debit orders are bouncing affecting my credit score. They’ve done same thing last month I called and even went to the bank to ask the reason for this , who agreed with them to deduct such amount they couldn’t answer and now it’s happening again. No one took my complaint seriously, I wasted my time last month trying to follow up on this coz it’s clear nothing was fixed. Am thinking of changing my bank FNB doesn’t respect people, I cannot be fraustrated on my pay day