Delayed payment for the service plan

I have service plan with Bidvest, i took my car in on Thursday 4th at Kia for service , and the service admistrator st Kia called bidvest for the claims for the car, when that lady send the claim invoice, she stated that they will not relise the car if the payment is not made, i called them asking them to pay on time, but i was told that according to the business procedure the payment will be relised in 3 working days, and they did not pay, on friday i received a call from on of there representatives asking me if i am happy with the service, i asked her how i am supposed to know because i did not get my car, she said they are releasing the payment, that was friday ar 8 in the morning, and at 4 i recieved a call from Kia, they told me that Bidvest did not pay, when called Bidvest they told me they had processed the payment , and i asked the lady to email me the proof of payment and the lady couldnt send the proof of payment, they only payed the service on Monday, it took them 4days to pay the service, and no body apoloised, i was told there is nothing the can do, is the procedure.