Still can't use my Credit Card for online transactions after endless calls and promises

Today marks a week since I am trying to do an online payment with my credit card for a transaction that I use for making a living , I still cant do the transaction , because the ***** department flag it as potential *****. Everytime I call , that is if I dont get cut off when holding on for anything from 20 to 40 min per call , they only say it has been sent to management , this is a week that I have heard nothing , I had one call from the complaints department and she only says she will get back to me or will phone them and ask what is going on , but this does not sort out my problem , I am losing money every single day because I cannot use my credit card to fund my online business the way it is intended to work so I have a useless credit card. I have phoned my private banker again today only to hear that she will follow up and get back to me , I have heard this 4 times in the last week. Please rethink if you would ever want to have an FNB account because they really have to many problems and no solutions and no one can help you and they are a very expensive bank.