Paid a huge deposit on a solar installation and the company closed down a few days later and money disappeared

I initially got a quote from Elise from Greenpoint Solar in May. Once I secured the finance I requested for someone to come to my house to confirm what was needed for the installation. Marko, the owner of Greenpoint Solar came to my house on the 22nd of July and said the only change required would be a better battery that they had in stock i.e. if I went with the old initial battery quote, I would have to wait a month for the installation, but with the more expensive battery the installation would be done in 7 working days. I accepted the new quote and paid the huge (80%) deposit. A week later they told me that they're out of stock on that battery and I would have to wait another week.

I few days later I on the 2nd of August I was called by Marko saying that he just came back from Australia and fired his General Manager for incompetence and because of it there would be some more delays as he tries to "pick up the pieces" of his business being run into the ground by his general manager. However, he said that I shouldn't worry as he will receive new stock by the 15th of August and will thereafter be able to complete the installation. Of course, this was a lie, because he couldn’t have been in Australia because he came to my house just over a week beforehand. This was the last time I heard from him. On the 5th of August, his employee Elsie told me that Marko had told all his employees on the 29th of July to “go home” and that she didn’t know what was happening. So as I later learned he had already closed down the company when he called me.

On the 8th of August I spoke to another ex employee Lee, who informed me that Marko was arrested on the 4th of August and that the company has closed down. Neither Elsie nor Lee know anything more than that and Marko is unreachable.

To this day I have not received any equipment or any work done by Marko or his company Greenpoint Solar, nor have I received any refund. He basically a huge amount of money from me and disappeared.