Majestic Motor Spares is a no go for parts - Bad attitude

I bought a throttle body for a Kia Cerato (G4KD) from David who is the branch of Majestic Motor Spares Cape Town. They supp**** me with an inappropriate one although they checked mine in the car. When I asked Kia to install it they found out that it was not suitable for my car. I text David who never responded until I drove about 192 km to and from and confronted him about this bad attitude. They promised to refund me within 7 days and later 7 working day, but till today I am still waiting for my money. I warn anyone who makes business with this company to think twice, because they are very unprofessional and have a bad attitude.