Galaxy Curtains and Blinds refuse to pay my money back

Hello Peter, what a terrible experience I have encountered with Galaxy Curtains and Blinds. On the 23th December 2020 the owner of this company by the name of Darlington took my couches to reuholstery them. And he said it would take 2 weeks to fix them. He gave me an invoice of R13 500 and he was soo persistent that I give me a deposit of R8500.00. The deposit was paid on the 3rd of January 2021.I kept on asking him about the progress of the couches, and he referred me to the workshop in Pretoria North, when i went there I discovered that he has quoted me like double or triple the amount of what te guys who are actually doing the job would. I confronted him and he said because u wanted my couches to be done in leather hence he quoted me R13 500 instead of R4500. I followed up on him only to find out the couches are not even done as it was taking long. I requested him to return my couches and money soo I can take them to a reputable person. He was taking me round circles until the 15th of March 2021 he bought the couches back sadly he send the drivers, he did not even come in person. Now he doesn't respond to my calls, smses, and he doesn't even want to give me my money back. He said he used it to buy the material to be used don't I want that material. I said to him before I can take it back i need a proper invoice or proof of purchase that will show how much, abd and where the material was bought. He promised to give it to me on the 7th April 2021 but nothing. On the 10th I send him a what's app to check if he managed to get it but no response. Can you please assist me to get my money back as now i foresee that Darlington doesn't want to payme me back. Thank you