I have been scammed by The Next Closet !! I bought...

I have been scammed by The Next Closet !! I bought a dress with the supposition to return it. Turns out to be impossible at all because from the category "Do it Yourself". Whatever this means ...
This is absolutely not (clearly) on the site. So I feel badly scammed. The dress was no less than 70, - !!! I will not spend such an amount if I'm not sure if the dress fits well? Ridiculous !! Bad company with a nice philosophy ..... what a disappointment!