No straight road with Cloud 9 Hair

I purchased a cloud 9 hair straightener. It is one of the most expensive straigtheners on the market. Seven months later it malfunctioned. I sent it back to the manufacturers. It is has been two months and I have not received the new one they promised. I am told that they do not have new consignment stock from the UK. I asked for a refund. There has been NO response from them whatsoever. Cloud 9 hair is the worst at responding.