I sold a car for $12000 and owed finace company about $9000. They gave me $3000 and emailed me a $9000 payment summery from their bank. Thinking sale was complete finance company called to say that they didn't recieve payment. The payment summery had XXXX over the first part of the my account number so I couldn't see if there was a typo to confirm they entered in the correct account. 3 weeks later they transfered $7000 saying that they had to spend $2000 on repairs to the vehicle to pass another roadworthy. They have the car and guessing it's now registered in their name. They refuse to pay the balance. Will the police help? Do I employ a tow truck and pick it up? Do I go to QCAT?