SOLD VEHICLE WITHOUT LOG BOOK

Towards the end of March 2016, after many months of searching I purchased a toyota hilux from BMW SMG SOUTH COAST. I took delivery, dealer told me log book and spare key will be sent through within the next week. A week later the manager called and said there was an issue with previous owners estate and He did not want to handover the logbook and my finance was cancelled and I had to return the vehicle. He suggested I choose another vehicle from his fleet which did not help in any way as I could not find a vehicle like the one I purchased at the same price. This is not the kind of professionalism I expect from a dealership like BMW SMG. At this time I am not happy with returning the vehicle and believe BMW should resolve the issue with the previous owner.