Refuse to give me my money back within 7days

I bought a phone at OK furniture da****rt on 6 January 2016 phone worked fine for a few days then started giving problems I took it back today the 11 of January. Firstly the manager told me that I don't have a 7day OBF which he **** to because sales consultant explained to me day of purchase. He refused to give my money back instead want to send it in. I told him I'm going to phone my lawyer which I did and he refused to speak to my lawyer. My lawyer told him it is my right to give me my money back. After that the regional manager didn't want to he emailed the buyer instead to check the phone out. No one in that store including the regional manager can do there work properly. They are looking for excuses not to give my money back. I'm still waiting for an answer and all I get is that they have to send it away. And for whatbit is in 7days I want my money back..!!! I need a phone for work purposes now I'm sitting with a phone that freezes up and OK refuses to give me my money back. I need an answer or I will take it much further with my lawyer and the media. So that everyone can see what type of service u get from OK furniture. And to help other people not to make the same mistake.