staff attitude when I asked to be refunded for wrong parts supp****

I wanted to order a gear lever bushy for my car, the consultant by the name of Redone told me that is not possible as this is supp**** with the gear link cables and Toyota can only order as a complete set which I did. The dollop ingredients day, I called them to check if the parts have been delivered and I was told yes but they couldn't call me before checking in details, I waited for the call till 15:30 and nothing happened. I called again and was kept on hold for Redone and when he answered, he told me that I can go there and fetch my order, I drove there in the middle of traffic and I made it approximately 16.:45 and I went straight to his counter where he prepared the invoice and took me to the cashier for payment. Unfortunately, after paying I realised that the cable doesn't come with the bushy and I immediately asked to be refunded but he refused insisting that he must first complete the forms for the credit manager to authorise and I can get the money the following day. I sent someone the next day to collect my refund as I was turned off to go through that experience again, mind you I am driving all the way from Soweto. When my friend got there, he was told that I needed to have sent him with my ID and bank statement which I immediately forwarded via email to him but for my surprise, he returned without my money nor it was refunded to my account. Today is 7th day after I gave them my details and still no refund. What will take Toyota Melrose Arch to refund my money? Is this the kind of Service offered to all their clients or isolated experience.? Toyota must stop making interest with my money for No services rendered. "I need my money now" and Fix your staff attitude.