Wesbank ********* Transaction Delays

I recently found out that car dealers get a kickback from Wesbank if they get customers to sign at higher interest rate. I have had 3 or 4 vehicles with them and recently it has taken them over a week to transfer funds from one account to the other however they promise it will be resolved within 24 - 48 hours, this delay results in them charging more interest on the amount, so if you want to pay a vehicle off, which I did, if they can delay the payment in any way possible they will do so, in order for them to charge more interest on the transaction.