I want to disconnect from facebook because i can't logging and the problem is i don't want my face shown to other people.my email or my mobile cell and even my password does accept.

You should be able to log in, but if you forgot the password, just log in and select "forgot my password" and they'll send you an e-mail to help changing your password.
Hope this helps.

You need to provide the proper e-mail address and password for the page. If you forgot the password, then use the Facebook recovery tool.

Log in with your email address and then update your mobile phone number.

• If you're still stuck, file a report on https://www.facebook.com/help/contact/259497704121855
  

if u r unable to start facebook chat on ebuddy,nimbuzz etc..go to ur facebook account add ur new onother mobile number or email to sign in..then remove an older email or phone number ,..

Use face book help

if you put the email down they can send your password to your email so you can log in

what is your password ill do this for you i try my best

you can reset you password by visiting
https://www.facebook.com/recover.php

1- Enter your email where it says "Option 1"
2-Click Search button
3- you'll be asked to enter two words for the security check
4-after that an email will be sent to you in order to reset your password

Normally you can log in to face book, through any mobile phone.
It does not matter, if you are using a different phone number.The face book site, takes no record of your phone number.
All you need to do, is to log in your email address,and your password .That is all you need, to access your account on face book.
i.e Neither the phone type nor the phone number matters.Just your correct email address and your correct password