One of their customers is a ********* and wont refund my money

One of their customers in Port Elizabeth told me he had goods to sell, I sent him the money and asked him when he was going to send, he got annoyed at me for constantly bothering him on his phone and said he would refund me that was beginning of last week by the end of the week I told him there was still no refund, on Friday he said he would go back to his bank and do another deposit still nothing