Damaged bar stool

I bought a bar stool, was asked to collect at their hideous warehouse, I got home assembled the chair and it wouldn't work. The salesman ****son was of great service.<br> The following day I went back to the store of purchase for an exchange or refund and have been treated quite badly. They refused to give me my refund, claimed that they don't have stock. My refund is said to be authorised by Head office.<br> I paid alot of money for goods purchased at this store to be treated like this. I'm not happy and am definitely never coming back. They need to rebook at the kind of management they employ who have no sense of customer service whatsoever.