I can't believe that so many spams are posted daily on forums and sometimes my messages are not even approved
and my messages get deleted or I don't know what happens to my reply that I make to threads

I am simply asking Admin or Super mods who has the authority to add spam counter measures to forum(vBulletin) please add good spam protection mods such as :
Spam Decimator
Disable Member Homepage Profile Option based on Post Count or Usergroup
NoSpam! Image Enhancement (New version of No Spam! for Custom Image Verification)

or if you can find something like this
Forbid Users from Posting Links or Images if They Have Fewer than 15 Posts

I hope you will consider my suggestion

Regards,
Kundan