Denied Access to Information Regarding Property Levies

I am experiencing problems with Whitfield Property Management. I have been charged random amounts for levies and I can't help but feel ******. They have refused to give me information regarding the actual amount of the levy for my property in Ihlathi Estate, Cape Town. All I have been told is that levies are charged according to size but when I requested documentation regarding the billing according to size, it was not given to me. As it stands, I do not know how much my levy is and I just get charged random amounts. I communicated with one of the owners who just sent me back to the same person that is failing at being a customer care consultant. I am frustrated at the lack of responsiveness and lack of information from Whitfield Property Management.