Unakoo Investments - Owes me R120k for books, blacklisted over non payment

This company owes me money! After supplying textbooks on behalf of Unakoo Investments to Lovedale TVET College for the amount of R120 000 I am still waiting for payment!! When I ask for payment the owner said that its coming and now after 6 months he doesn't return my calls, whatsapps or emails. Ive had to go to a company ( Warren at Impact investigations) to try and get my moneys back and have Unakoo Investments blacklisted. No communication, no payment plan..nothing! Just blue ticks on Whatsapp and unanswered calls.