Simply Cabinet Doors refuse to refund my money.

I used to work for a woodworking company previously and decided to finish their last Job in my personal capacity as the company closed down.

I made an EFT to Simply Cabinet Doors for material needed for job with my name and Surname as reference. Luan Truter from Simply Cabinet Doors then let me know that they are keeping the money for outstanding payments still owed by the woodworking company I used to work for. Let me just make it clear, I only worked for them, I had no shares in the Business and was just a Job Foreman. Luan Truter told me in an email that their lawyer, Japie Daniel Theron from Lucas Dysel Crouse Inc in Durbanville, told him that it was the right thing to do.

I have never heard anything so absurd in my life.

Please help.