What are the rules about bashing one of our vendors on the forum?

[SlickGT1]

Hi, what are the rules about bashing one of our vendors, that even though they took care of my refund. It took me months, phone calls, left messages, and finally got the manager to approve the damn credit after trying to argue with me. It is not that it was a lot of money, but seriously, I was told it would get done the right way right away.

Oh and this is on top of me sending that vendor back goods that they shipped to me by mistake. Nearly $400 worth of stuff that I should have just kept, and put on ebay.

So just wanted to give a few pointers about this one vendor. Lets put it this way, once I use up that credit, I will not spend a dime there again.