Dishonest & ********* company

I did a project with Premium kitchens. Big company, based in Germiston with clients such as News cafe and Mugg and bean. A project worth R1 million. When the time arrived to pay me, the story begun. My consultant fee was only 5% of the amount and until now, a year and 3 months later I still haven't received. They stopped taking my calls, replying to emails, ignored 4 demand letters, police served them another demand letter last month and nothing till now. They went as far as to block me on Facebook. I can only view their page. Got so bad where the actual client contacted the company as they were very impressed with my work and enquired why I haven't been paid, even he, was ignored and they own restaurants so makes me wonder what professional etiquette do these people have. Police told me the owner is probably ****** and xenophobic and his aiming at dragging the issue till I give up. That's not going to happen. I won't work with them but they are not keeping my money either