Close my account and refund me

It has been over 2 weeks since i settled my loan with Wesbank Cash Power loan but my account is still open and no refund has been made. I called them several times and all of them they tell me different stories. I am ****ed now because all i want is for them to close my account and refund what is due to me before they charge me for the next month. Money is reflecting on their system but they do not want to just close my account mxm which i do not understand why ...... I have sent them everything they need but someone does not want to do their job which is ****ing me off.