Selling Property under debt review

So happy with Afriskuld service at the start. Debt review for is a big faithful step to financial freedom, therefore planning should be done carefully. I'm in the process of selling my property and I've recently asked what the discounted amount would be when it's sold because I received rental income for it. They couldn't give me an answer and said they can only give me an indication once the account is settled. The problem is, if the discounted amount is much lower than the rental income I've received then I will be in even bigger financial burden. And that will defeat the purpose of being in debt review?