my facebook account is hacked. how can i access my account back?

[Tracy]

so this is the story.. it was yesterday when i try to log in to facebook. but i can no longer open my account. so facebook sent me a security code on my mobile number so i can confirm my identity. but the problem is, they sent the code to my old mobile number (yes i have the simcard, but its damage.) i tried so many ways... i went to the outlet store of my mobile network and asked them if i could request a new simcard with the same number. but they said its applicable only for postpaid user.. (and i use prepaid simcard) simcard thing is fine. but my problem is i cant access my facebook and that account is so important. as in ! pls help? anyone?

[Clinkz]

Facebook user should give a value to their email account and the password of both account must not be the same. For in case an emergency, you can retrieve your Facebook account using your email account by resetting the password.