I need university of Johannesburg to refund my money

University of Johannesburg has been giving problems , I can not reach them and even when I write emails they do not respond . Early this year I registered at University of Johannesburg and Di registered because of I was accepted into the wrong course , unfortunately we realized at a later stage and payments were already made by a third party ( Sanlam) so we reached both me and Sanlam and we request a refund and filled in the necessary forms and The only respond we got was “ refunds normally take up to 14 days “ so we should wait till then , in the mean time further communication will be sent via email, till this day UJ has not been communicating or Refunded my money , I need that money for school as I’m doing my first year at Rosebank international, please help me so they can refund my money , thank you.