I thought the top 2 always get nominated, now they`ve dragged in 3rd & 4th

and what a fix saving Perez AGAIN for eviction by sticking him in the Perez room

Who decides? BB of course. Not the viewers obviously.

Did you complain when Katie Hopkins was "saved" for the second time?

And to be fair, each has been "saved" once by Big Brother. The other time was by another housemate. Unless you're one of those tinfoil-hat people who think that the housemates didn't really do the choosing.