Poor service form call centre agent

Good day, i contacted your call centre on Monday when i received my Credit Card Statement and queried the fact that i have a budget amount on my account which i did not authorise as I never since i had this card procured any items on budget. I been charged interest on this item. As it may be the person that assisted me on 23/11/2015 confirmed an amount i have to pay. But when i add this amount to my so call straight amount this does not add up what he gave me. I subsequently contacted your call centre at 18:15 and told the person that i need to know what amount i need to pay exactly. I told him that a budget amount reflected on my account and that this have been moved to straight and i need to know the amount to be paid. He clearly does not know his job function as he started to irate me as Premium Platinum client and he then kept on saying I'm rude to him which was not the case and he is unprofessional and ********* call centre agent. I do not tolerate poor service of this nature.