TOOK MY CLIENTS MONEY AND THEN VANISHED

I gave Dynamix as a preferred provider for PC training to one of my clients. They chose their course and paid. When they arrived at the training premises the next week all doors were closed stating that Dynamix closed down. My client is not very impressed with my contact I have and neither am I at this stage. I will unfortunately not ever recommend any company to a client again. How can my client get their money back please!