Hey I bought coat from Dorothy Perkins online in September. As the weather has been quite mild I only started wearing it the other week when it was really cold. After 4 days of wear I noticed the lining under the left arm had come away. I took the coat back to two stores. The first store initially offered me an exchange, which i didn't want, but after viewing the date on the receipt they accused me of purposefully damaging the coat and refused to offer me anything. The second store told me that unless I had bought it from their store they could not help me. After contacting their customer services department, I was advised they would investigate if there had been any manufacturing issues with the coat but if not, i would be refused a refund. Surely, this can't be right. Any suggestions? Thanks