Unsatisfied customer

Good day I am pleading with this company to assist my husband. They sent an invoice of R19K and they were paid to repair his car a Toyota Tazz, they said it was for an engine overall. Funny enough they kept the car and we had to tow the car to another mechanic because even after so much money was paid the car couldn't start on it's own.

Mr Maepa requests are: 1. proof that the "parts" that he paid for was new. 2. What was done to the car be explained.