Negligence on a customer

My son bought a pre owned car at Village Autos two months ago,the 1st two weeks the car gave problems and he contacted them they just said it wasnt a problem till lastweek 18th September the car wouldnt go into gear and he contacted JJ the owner of the shop so they said he should bring it in,my husband towed him,i mean he bought the car by them through thw bank and insurence is being deducted,he has to go to work and is stranded,they told him the 19th the car will be fixed tomorrow 26thSep but now they telling him they havent worked on it yet because they have alot of cars to do,he dont have transport and they dont wana give him something else so long to use,how do they exspect him to get to and from work and has to pay for a car thats not fixed yet,i think its totally unexceptable,My sons name is Valentino Davids and he bought a Fiat by them,they can atleast give him a car to use while waiting,not fait