I don't know where should I place this thread, but uhm, I need help :( please help me!

so here it is, someone is using my account recently. I don't know how or where he/she gets my account. he/she owns my one and only account (S143-Gamakichi Name: Angelique), and obviously he/she had my oasis account, too. the worst is, he/she already set my account security on http://www.oasgames.com. I can't even change the security questions since he/she already set questions. I have no idea how to retrieve it. if anyone who knows how to get back my precious account, please help me!

the bottomline is, he/she spends lots of my coupons, seals, scrolls, etc. and I just f**ked up. I lost all of my efforts just to save on it for future events.

as far as I investigate, he/she had bound his Gmail account on my oasis' : jhinjinx436@gmail.com

also, if anyone of you here knows how to delete an oasis account or any method how to retrieve it.. can you pm me up?