********** behaviour

I made purchases on the 28th . 1 at around 2am online from SHEIN, I received a notification that the money has left my account. I made another purchase at clicks at around 9 o’clock. I received a notification again that they money has left my account. Yet yesterday my account was on a minus R575 I called the call centre I was told that was being clicks didn’t bank the money then they banked it yesterday. Today I’m on -R935 and I’m told FNB made payment on my behalf. On my behalf how when I had money in my account the whole time ? Why must I pay twice for something I already paid for ? What ******* is this ? I want my money. This is ********** behaviour. Worse from the number 1 bank in South Africa? Wow