For a single channel:

Code:
on *:TEXT: *:#: {
  if ($chan == #banchan) halt

  if ($me !isop $chan) { 
    .msg $chan I'm Still not an operator. Go to #Bux for requesting again.
    .timer 1 30 .part $chan I'm Still not an operator. Go to #Bux for requesting again.
  } 
}


For multiple channels use $istok, same as your other question:

Code:
on *:TEXT: *:#: {
  ; banned channel list
  if ($istok(#chan1 #chan2 #chanx,$chan,32)) halt

  if ($me !isop $chan) { 
    .msg $chan I'm Still not an operator. Go to #Bux for requesting again.
    .timer 1 30 .part $chan I'm Still not an operator. Go to #Bux for requesting again.
  } 
}