Refund of R81000-00 on hire and fly on ZS-ECK

This business took over R81000-00 from me for a hire and fly on a C182 ZS ECK which was later sold without flying a single hour of the paid for 35hours. Marco Duplesis has been asked for a refund but he blocks my number from calling. I can't find this business at the advertised business premises in Grand Central airport. Marco keeps on saying his business director is going to tell him what to do on the asked refund.