Refusing to refund when quality is the issue

Metropolis / MixShopRocks / MixShop I'd like to take a moment to tell the world about your shocking customer service, atrocious quality in clothing and ******* policies. Last Monday I purchased a dress from your store. First time I ever shopped with you. It had the Gatsby feel I had spent 8 hours shopping to find for my birthday.The day of my party I took it with me to shop for underwear to match. The assistant pointed out that the back of the dress was fraying, 4 hours before my party. I rushed back to the store. Luckily there was the same dress. I reckoned it was a once off issue with that particular dress. The second one was provided as a replacement. The same thing happened to the second dress. I spent 900 on this piece! 900 for a dress I don't even have to wear once for it to fall apart. Now if it had happened once, fine but twice. Not so fine. I went to go get a refund. The store staff are amazing, lovely people, the supposed customer service person however for your store, based at their head office; Sebastian Isaacs, decided that he should shout at me, tell me he isn't going to help me or refund me and put the phone down in my face. This is *******, I am entitled to a refund