Poor service from FNB

I have been with FNB for a few years now. At first I loved it because the they are very helpful and friendly and the service was fast. But now I have issues.

3 months ago I paid my rent into my landlords account, he never received the money. It showed it was out of my account. Twice. Bcz the first time it didn't go through the second time I paid again and then it showed I paid it. A few days past and my landlord lets me know the money isn't in.

I went in and they told me it was a missing payment and they will investigate. It's been 3 months and I had no call or message that came from them. I had to pay double the next month and I also had to take out loans just to survive. That also made my credit score fall and it's very bad.

I am very unhappy. Because they never paid back the money. They don't want to help me. And I keep on calling and going in. I am considering changing banks because I can't trust FNB anymore.

Because of my credit score that fell I can't get a new place to move to, I can't get a car finance, I'm too scared to make payments and keepu savings in my account.