Refuse a refund and very rude sales lady

Bought a pair of boots. I fit them on at home and decided that I do not like them. I can't stand in them and feel off balance. I work during the week and took them back the next weekend. The sales lady refused a refund saying that it looks worn. It doesn't. It can't. I even took photo's. She was extremely rude and refused to give me her name. I emailed their department and just do not get a response back. I will never purchase from them again. They are very unprofessional. I am offended that they say I am lying. I was there on the 6th and 7th day, have my till slip, original packaging and no damage to the boots. They refuse to refund me.