Angry client

Ive never had such bad experience shame.. even the customer service is on another level. Just a simple question and the bankers cant answer it.

On the the 5th I ordered KFC, the order was R71 and it was deducted from my available balance and I had about R270 in the account then. On the 7th they come to my account and deduct the 70 i was left with then i had a negative balance but i realized they did not take it in time. Now they proceed to charge me another R71 honouring fee so in total R140 was charged from my account.

I talked with 4 different agents that failed to make me understand why i was charged like that and i find it very *********** of them as they even closed the chats while i was still there. Even if it was 20 i was gonna want an explaination i dont care its my money so please address this. I need my answer. I just need to understand!!!!!