Fees going up without transparency

I have loan with finchoice ,mobi money and the 24 months loan.I have written to them that I see I get charged R91 daily for 24 months loan and R4 for mobi money.I asked them to check this and come back to me but I just got a lame answer and this charges gets added daily and the charges do not appear on the statement but when I check my balance it goes up daily and I am really concerned about this ,if the charges were appearing on the statement then I would say this makes sense but I check my account daily fees are added without explanation and the service when u call is really bad.