It's a ****

I booked a trip with this guy In March. I told him what I wanted and he sent me an invoice. I paid the full amount, them come traveling time, he told me room I wanted was fully booked. I changed my travel schedule and gave him other dates to book. After a week or so he came back and said those were also fully. He then offered to refund me. This was on the 26th of May, it's the 4th of July I'm still waiting for my money. I call he doesn't pick, he responds to my what'sapp massages and keeps making empty promises. I'm still waiting