Deposit paid, no delivery

My husband paid a 75% deposit of R5,000 for steel burglar bars and a security gate in May 2015. Adriaan kept promising delivery and installation on numerous occasions, but never arrived. He wouldn't take any of our calls, unless we phoned him from numbers he didn't know. Eventually he said he can't deliver, but would repay the deposit. cannot get hold of him since then, which was 2 months ago.