Bad service

I am so disappointed about what has happened,all my debit orders went through except for the credit card so I made sure I leave R1148 because they going to debit R1070. Today I got an sms that the credit card debit order went through,I then logged on my cellphone banking and noticed that the is already money on my credit card as usual,as always after the credit card is debited R771 goes directly to my credit account which was done.now a few hours later I got another sms that the credit card debit order bounced but the money in my cheque account was not there.now all of a sudden there's R500 in my account I don't know where the rest of the money is when they say the debit order did not go through.I even went to FNB Gezina and they called credit card department and I spoke to Nonhlanhla ref RM ********** 62985.and was then transferred to Ntokozo she explained nonsense that didn't even make sense. It's not the first time I am having problems with FNB debit orders,the last time it happened I logged the query on Hello Peter. I am really not happy about this.