One week later and still awaiting settlement amount.

We traded in two vehicles, a Scorpio Mahindra and a Mahindra KUV100 last week and purchased a Kia Sonet. All vehicle papers were handed over last week Friday, including the vehicles. There was no bank settlement amount on the Scorpio Mahindra. We were told 2 - 4 working days to be paid out. A week later still nothing. Today Kia phoned us and said payment would be made by close of business today, FNB to FNB. Still we wait with their stories. I have never experienced a vehicle payout take this long in all the years that we have been purchasing and selling cars. Everyone just says they have followed up with the bank and are awaiting bank payment which I do not believe to be true. Why did they phone us today and promise payment by close of business today if they weren’t intending to do it. When I questioned why it was taking so long I was told it was because our paperwork took a while to correct, but our paperwork has been perfect for over a week. They have our old vehicles. They have our original vehicle papers. So where is my payment for my vehicle??? Today they ask for proof of bank details again when it was sent to Sibusiso on the 11th of June. What on earth is going on???