Shocking service from Booking.com!

When am I going to receive my refund? I made a reservation on 26 April and then cancelled on the 2 May using the free cancellation policy. I was initally told by Booking.com that the refund will take 10-15 working days, it has been longer. When I phone Booking.com they say that they have to speak to the resort, when I phone the resort, they say I must speak to Booking.com. So when am I going to get my refund of R 11 800?