Poor service

Fnb failed me as a customer. A don't care attitude from Zukiwe from the collection department. My complaint was initially handled by Victoria a professional lady who is passionate about her job. Victoria then referred my matter to Zukiwe who called me on Friday. During my interaction with Zukiwe she indicated that the money ive paid for the arrears hasn't cleared, as a result she will call me back on Monday to assist me further. It is so unbelievable that Victoria is the one who called me to make a follow up and promised to communicate with Zukiwe as the money has cleared. I've called Zukiwe's office to no avail. I was informed that she was in a meeting, however she didn't even bother to come back to me nor a courtesy call just to inform me that she was in a meeting. I am not happy with Zukiwe and the manner she handled my case. It was easy for fnb to send my information to itc but now, it is difficult for them to follow the same procedure and inform experian and transunion that my account is up to date. Can I get a response because I am intending to report this matter to the National credit regulator.