How do I unlock my nokia 2730?!?!?!?!?!?

It is locked with sun cellular here in the philippines. I don't know where to get my unlock code. I don't want to download any softwares and i don't want to go to the mall to have it unlocked. HEHE. :) PLEASE HELP MEEEEE. If you need my IMEI... just ask :) THANK YOU