we paid for chairs we never received

We ordered anf paid R650 for the hiring of barchairs in a specific colour and emphasized that we do not want the black chairs in the store.The owner named Dawn confirmed that we will get the right chairs.When we went to pick up the chairs it was indeed the black ones but the person in the shop Hilton refused to give our money back so we can go look elsewhere.The owner whom we dealt with was nowhere to be found.After making a phone call Hilton confirmed we could get the money back the next day but yet we never received it.I am very disappointed because we had to pay another R600 at another shop for the right colour chairs but lost R650 in the process because these people are crooks and they seemed so nice.I would not recommend anyone to do business with them.