These are   not the quality of a 400TC  duvet cover that I expect from Wayfair.  They are thin and creased badly on washing .  I have had a previous duvet from Wayfair which is very good. What is most annoying is that they say the window for complaint has closed. This is no way  fair (hope you like the word use) as I had no reason to use the duvets until last weekend.  How can one get redress in a situation like this?   There is no item label to confirm the thread count so how could I  check before using and washing them?  I want to submit a formal complaint.