Poor Customer Service

I would like to bring to your attention that I visited your Game store today (30 November) to exchange my Mainstay 10 tier shoe rack that I purchased 3 months ago, as per the manager at Game in KC, she refused to help me and had a very ugly attitude and her customer service was really poor. I’m disgusted as to why she didn’t even give me a hearing, I want to exchange my shoe rack ASAP. I am looking forward to your response as I am a loyal and paying customer... thank you in advance