FNB has bad customer service

I signed up for Apple Pay through the FNB app. There was R13,000 of ***** and they have refused to repay me. Last week I wrote a review about it on HelloPeter and they sent me an email saying they would contact me back regarding my case. *** I have not heard back from them and I refuse to put any money in my account as I am scared that if I do and it is taken out I will not get a refund. And this was my fourth ***** case with FNB within a calendar year!!