Afristay ******** me out of money

Right after Christmas we decided on the spur of the moment to go away for a few days. Most places were full but I made availability inquiries everywhere I could - also with Afristay.com for among other places a place called Zinyala. Afristay still had my card details loaded from a previous time I booked and you cannot inquire as to availability without selecting a payment option - I selected card. They state on the same message where they confirm an enquiry has been sent that you should apply to as many places as possible to make sure you find space. This was on Thursday morning. Friday afternoon I actually inquired with Zinyala from another website as I had still received no reply and told them so much. Saturday morning I confirmed a booking with another lodge. When I went into my bank account to pay the other lodge I noticed that Afristay had taken a deposit off my card (half the amount of a week's accommodation at Zinyala) Apparently Zinyala had confirmed they had availability that morning and Afristay took the liberty of just accepting the booking on my behalf and deducting the deposit from my creditcard. I immediately called them and told them it was too late I had booked somewhere else. To date I have still to be refunded - I have been promised a refund - then the story changed - then they were waiting for the host - ZInyala to pay back the money - now the host says she has paid it back to them but still no refund. Afristay seems to be a **** ?