SA TAXI REFUSING TO ISSUE ACCOUNT STATEMENT TO CLIENT

SA Taxi finances my father's taxi, and his account is in arrears. I've been assisting him in paying because I've made deposits into the SA Taxi account on occasion, but now when he calls to request a statement so that we can see how much he owes and arrange to settle the account, he's been told that he needs to pay +R100k in arrears (which was said 2 months ago that he owed +_ R45000 in areas and I deposited R20 000) before they can tell him the balance owed or even give him the account statement. I'm not sure why his account details are withheld from him. We, his children, want to help, but we can't without getting his statement.