I have taken a holding deposit for the private sale of my car. No written contract for the sale was written. Upon further thought, I have decided not to sell the car and want to issue a full refund of the deposit the buyer has given me. But the buyer is now threatening me and forcing me against my will to sell my car with very threatening statements, refusing to pass me the banking details for the refund. Do I have my legal rights to withdraw my sales under Australian Consumer Law? I feel very threatened.