OUTSTANDING SCHOLL FEES

HI<br> i am very very worried and also corncen about how the eric low school is handling their finances,please help me to sort these metter out , i was owing the school fees of R11 800 for the 2014 only and i Paid R3000.00 R6000.00 =R9000.00 then my balance came to be R2800.00 now their to me to the lawyer and said i wen i pay didnt say is for the outstanding school fees how can i pay current without finishing the previous debt is that possible, now theier saying i owe the R8 800.00 an am handed over to their lawers whom i believe is ac am that the use to get more money from poor parent like us please help,