Disgusted client

I had arrears on my personal loan and made a payment arrangement of R715 for 6 months on the app, but I was debited R715 and an additional amount of R2144 and I was told I made that arrangement. I was refunded of the R2144 twice, on the 3rd month I paid R5000 directly to my loan thinking they would not deduct and the went ahead and debited and reversed the R2144. I was then told I would be refunded R5000. Of which I wasn’t but only refunded R2144 and was advised that my loan is now uptodate. And I was okay with that. Again on the 25th I got my normal debit and an additional one of R715 WHY??? I want my money back !!!On the 25th of October I was debited and when I query I am being told that I must wait for funds to appear, how unfair is this that I now need to wait for FNB to see funds they clearly deducted from my account unnecessarily.mind you , all charges incurred by these reversals must be settled by me, I am livid and honestly REGRET USING FNB !! They have client Curtiss and consideration