Owner cancelled their contract with Diy Landlords

The owner cancelled his contract almost 8 months back with DIY LAndlords and started renting out his property to us by him self since then we have not received any deposits back from Johan Kotze theire land line is not in use any more and they never anser calls to theire celphone or even respond to email or any cominication. They hold a lot of deposits from previouse tenants two. We are renting from the owner directly now who wants his deposit but we stil have not received our double deposit back. Why is this the tenants problem if the owner canceld his deal with DIY landlords with out telling us or getting our deposit from them