New customers just wait till you want to claim, then they dont want to pay

My son bought a Ford Ranger bakkie on finance at a dealership and insured the bakkie at King Price, this was about 2 weeks back, this monrning a taxi drove him of the road 30/10/2023, he called King Price and they said they are sending a truck to collect the bakkie and everything seemed fine, then he got a call from the driver that was on his way to pick up the bakkie that King Price has cancelled the *** up. NOW King price is trying not no pay for damages as they are talking about a R300 and something rand that they tried to debit but they where unsuccessful, but there was money in his account and he even send them bank statements to proof that funds were available, NO DEALER OR BANK will let a vehicle leave their premisses without insurance, but now King Price is looking for a way not to pay