I have bough a lot of parts from Rock Auto. Recent...

I have bough a lot of parts from Rock Auto. Recently I got a bad axle from them. I was surprised that I had to pay return shipping to send it back for a refund when they sent me a bad part. Also, I put a review on their site with one star and it never showed up. If you check their site, the reviews all look good. Feedback tampering from Rock Auto. Here on Google, you see bad feedback. So, Rock Auto, where is my bad feedback? And why do people have to pay to return a bad part? At least at your local parts house, they will take back a bad part for free.