Calvin What Should I Include In A Letter To Calvin Klein?

What should I include in a letter to Calvin Klein? - calvin

I bought an expensive dress shirt for work. The shirt is evaporated and always seems to be crumpled. I took the laundry in vain. I would like to write a letter to express my dissatisfaction with this shirt. I have bought many products from Calvin Klein in the past, and within the state. What can I put in my letter? Thank you very much.