ACCOUNT NOT PAID

I graduated in April 2015 In Vaal University of Technology and was not given my diploma due to the fact that Nsfas has not paid my account , I was even advised to call the head office in Cape town, when i called i was told that they only have my contracts for 2012 and 2013 for 2014 they know nothing about me, strange thing is that i have a copy of my agreement form that i have signed on the 6th of march 2014, i explained all of this to the team leader by the name of Christopher Nosi whom i have even sent an email with my agreement form and attachments of both parents death certificates and even today i am still waiting for him to call me back, i received a call on Monday from the university lawyers they say i must pay that 64000, i don't even have a diploma or even a academic record so i can apply for a job as i have been blocked from the school system, and i have been calling the ***.. number for so many times asking for Christopher to call me and i am still waiting WHERE CAN I GET HELP because this is too much now