Termination of contract

My name is Ofentse Mailula, I started doing an Enrolled Nurse Upgrade course at Netcare Nursing College in Aucklandpark Johannesburg in 2014 June, the cost of the course was R6700 and I paid that amount in cash then I had a personal problems, my mom was I'll and I had to terminate my course, I wrote a letter to the college n was promised a refund of 50% of what I had paid, iv been calling the college since last year, going to the college n asking why I haven't been refunded, I spoke to a lady called Vanessa who works there and she keeps giving me empty promises, I would like my money back as soon as possible, my contact details are ***r