It says that when i try to log in to the game and when i try to connect using a different client please help

Clients such as modded client are not allowed on the server other than for "premium members" Wich are mods, Admins and sometime certain amount of money donators. Try to connect with a totaly original Client !

I did try to log on to the real one but it said the same thing

OH you didnt buy the game ?

No, i got the beta and i made an account but when i go to the launcher it said when i logged in, "Not premium user"

You need to buy the game...

no

its probly because minecraft.net was down and he signed in offline.

most likely but if that's not the case the client is hacked.