There are only 2 buses services going direct to Kuala Besut, namely Mutiara and Mahligai. The cost is usually RM40.00, and they drop you off within walking distance of the jetty.
Best of luck!
OP is asking about getting from KB to KL.
My advice - fly with Air Asia and save yourself a ton of time, flights are usually pretty cheap too.
#3 chinarocks has been a member since 17/6/2011. Posts: 738