Booking.com is becoming a ****

I am absolutely fed up with booking.com, the other day i booked a place and got ****med, the place didn't exist, i called booking.com and they said they would refund me and cover ALL extra costs of the new place since i now had to take out extra money to book a new place. We paid R3000 extra for a new place and when it was time for them to refund me the extra costs, they said they unfortunately can only refund it into my account credits, which no one had told me would happen from the beginning. This happened on 4 october, it is now 20 october and after struggling with *** through *** where im being ignored and not given a solution, the credits are still not showing in my account, but they have said at least four times that it is showing, and when i tell them its not they start ignoring me. When is the ******** going to stop ? how should i know who to trust. Booking.com is absolutely terrible with their customer service and doesn't offer any solutions possible.