So Hastings owe you the value of the car, less what they have already paid you for the claim and compensation for selling the car, when you had already said you wanted it back.
Suggest that you make a complaint in writing to Hastings head of claims and state the amount that they need to pay you, to avoid a Court claim being issued against them.
Don't touch them owe me £500 since January 2019 make excuse after excuse. Seem they always have software problems sending money out. Keep saying they will call back or email nothing been chasing it now for 6 mths the phone staff always have the same banter we will chase it up and get back to you then nothing!