Why such bad service, No help. Bad attitude.

ITS BEEN A YEAR SINCE I SOLD MY HOUSE IN GREENSHIELDS PARK. MONEY IS OWING ME FROM MUNICIPALITY R 447.74 PLUS YEARS INTEREST OWING ME. I'VE BEEN THERE 3 TIMES. WANT ID MY BANK ACCOUNT. GIVE TO THE PEOPLE ON FLOOR. BUT I HAVE QUESTION WHY DOES MUNICIPALITY NEED 3 MONTHS BANK STATEMENTS. I DON'T WANT TO THEM MY PRIVATE INFO.