Being threatened to remove review

Contacted them to come out and fix my washing machine. They came and informed me a part had to be replaced. R2890. Machine still did not work. They have been promising for days to come and no one shows up. They ignore my calls. Requested the owners number or refund. Placed a review. Now they are threatening me demanding I remove my reviews and until then no one will assist me. Their work ethic is disgusting. I am looking for the owners details so that I may escalate the matter. They are refusing to fix their work. They are refusing to refund me. They are refusing to give me the owners details. And they are now threatening me.