FNB international limits!!!!!!

Since Friday I have been trying to sort out this problem. I need to load my FNB Gold Cheque card onto Facebook and Mail Chimp to make international payments. Everytime we put the transaction through, I get an error from FNB saying that my International Limits have been reached. I have never made an international purchase with this business account. I have set my limits to way above what is necessary. There is enough funds in the account. Every call centre agent in the business department has told me I need to increase my limit!!!!! I have. Done. Still not working! Then they advise I need to go to the branch. Done. Still not working! I then phoned the ***** department. They said there isn't ***** or a ***** block on my account. So please please please FNB, tell me what should I do???? I need to register theses payments ASAP for my course and I cannot continue if this is not sorted out! Please come back to me with a solution immediately.