Transaction declined as it is not allowed on your card.

For the past few months, I have been contacting FNB in various ways to get a simple issue on my card resolved. The issue I have been facing is that my online payments to international vendors gets declined, saying the transaction is not allowed on my card. I have spoken to them on secure chat, gone to their branch (Riverside mall, Rondebosch) and called them. Every single person has put me through to a department that has forwarded me to another department and so on. I have spoken to a ridiculous amount of departments, none of which have offered help or taken responsibility for my issues but instead, simply forwarded my complaints. Initially I had an easy account from my student days which they said might be an issue so i upgraded to the premier account (which claims to offer you private bankers that help resolve your issues. You can contact them but they will also just forward your call to some other department). I have spoken to the following departments:

1) 3D secure department 2) Card authorization department 3) ***** department 4) Limits department 5) Forex department

and a bunch of others i can't even remember. I would specifically like to mention the awful service I got at the Riverside mall branch in Rondebosch which forced me to end up in tears. After nearly an hour of waiting, I got attended to by one of only two women. All she did was try and get me to leave without even investigating my issue for a moment, and when that didn't work, she took me to another counter, dialed a number and told me to chat to them (after i had repeatedly told her that no one on the phone had helped me and that the sms from fnb received asked me to come to a branch). On the phone the same thing happened, I kept getting forwarded to 3-4 different departments, the last of which was closed so my call just got terminated. When i went back to chat to her, she didn't even spare a moment to apologize or suggest what else i should do but simply said i'm busy with other people, go speak to the receptionist. I can't believe the treatment i got as a customer desperate to get some help, and no one would even spare 5mins to chat to me and help me out. I don't expect them to have all the answers or to know how to fix my issue, but I don't think i'm asking for too much if i expect the staff to be courteous and helpful and not shun me away like i'm asking for a favor and its not their job. Some politeness and a little less arrogance. Honestly, i would like for someone to have a chat with that woman and explain to her that she can't treat people in such a manner. I've had excellent experience with another staff member their (the second woman that works on Saturday). She's amazing and helpful and kind. The second lady (Asian lady, sitting on the second counter), is terrible and unpleasant and she genuinely hurt my feelings as i stood there trying to figure out what the hell was happening to me.