Sounds like you maybe describing Club Chang D! About halfway up the climb out of Kamala on the left? Walk through two concrete effalumps to get in!
That has been closed a while now.
'The Pub' is on the left as you drive through Kamala, on the end of a row of shops, almost opposite the first of the 7-11's.
Air-conned, cheap enough beer, normally a live (But Poor) Thai band, karaoke place upstairs and loads of blokes stood outside smoking when it's open!
Lots of Neon as well!