Refusal to return washing machine

These guys came to evaluate my faulty washing machine 3 weeks ago, then said they needed to take it in because they could not find the problem.<br> I asked if they will bring it back free of charge and they said yes.<br> They later informed me that it would cost R1500 to fix, which I did not want to pay, so I asked them to just bring it back, to which they said they have to discuss with the insurance.<br> They told me the same story every time I called and it seems that they don't want me to collect it.<br> I'm worried it's been repaired and sold already!