outpass

hey guys last year january 13, 2014 i came herein malysia as tourist then i met a agent he take my passport n 1500 ringit for permit but after dat he making excuses to return my passport later anyhow i manage to take back my passport but meanwhile i have overstyed and was unable to extend my visa. now am illeagle here n want to go back i just want to know what to do? to whom i can approch n how much money i have to arrange..