I need my money back!!!

In March 2024, I placed an order of 2x front brake disc, 2x back brake disc and 1x clutch kit. I made an EFT for the whole 2007 Mazda 3 Hatchback. I was assisted by Mr Synie. I only received the 1x clutch kit and 2x front brake disc. I paid R200 for courier! Boss Auto Spares Gauteng refuses to refund me my R780🫣. That is bad business! I paid them R4326.00.