Facebook is biased!!!

Hi guys Facebook is really not fair in what they do , some people are able to post adds for blank Guns and nothing gets done to them how ever when I posted my add for my blank gun my account was restricted that I can no longer use market place and my market place is blocked , this is really not fair how they operate and other people's post for the blank Guns are still on add , even if you go and look now it's still up , the changed the description to Gnus please something needs to be done about this , I really need my market place opened again because I buy a lot through the market place and I run my business adds though market place