We are fellow users here on these forums, you're not talking to iTunes Support nor Apple.
Is it your id that the phone is linked to ? Only the owner of an account can remove a device from Find My iPhone, neither Apple nor users on these forums can do it - if you bought the phone used then you will need to contact the previous owner, he/she is the only person who can remove it from their account.
Activation lock : http://support.apple.com/kb/TS4515
If it's your account and you can't remember your id then do you have any of its purchases on your computer : http://support.apple.com/kb/HT1920
Or can you get the id, and its password reset, via http://iforgot.apple.com ?
If you can remember your id then you can either remove the phone from it by typing in the id and password on the phone, or using https://www.icloud.com/#find