NO COMMUNICATION

I CANCELLED MY STUDIES AND ALL I HAD TO PAY WAS R500.00 I MADE A ARRANGEMENT WITH THEM TO PAY 2 X MONTHS LATER DUE TO I DID NOT HAVE THE R500.00 NOW, NOW THEY SENT ME A FINAL DEMAND LETTER SAYING THAT I OWE THEM 2X INSTALLMENTS AND CANCELATION FEE AMOUNT..... X2 PEOPLE SAID I ONLY HAVE TO PAY THE R500.00 AND NOW ANOTHER PERSON TELLS ME DIFFERENTLY BADD SERVICE!