CHANGE IN EXAM VENUE

I registered for 1st semester at Unisa , My fees have already been paid! on my registration forms and previous exams written i have always wrote at the Durban Chatsworth(Youth Centre)<br> My profile at the beginning of the year had Chatsworth and now its been Changed to Telkom learn Centre with out my authority!!!<br> i have tried calling and emailing and no response, The service is pathetic important communications don't get sent to students<br> i want feedback and i want my exam centre changed immediately!!!