Xtreme Kurves bodyshaper

Xtreme Kurves shapewear, mid-thigh length shorts, underbust so you can wear your own bra. Hook and zipper closure, open crotch. Description on the site said to go up 2 sizes, I ordered 1 size up & was too big.. recommended for size XS, S, M. (See size chart) Paid $80 plus $10 shipping. They do not allow exchanges or returns, so I'd just like to get back some of what I paid. BRAND NEW, tried on once.