Problems logging onto facebook

Hello, I have been unable to log onto facebook for over a week now either from my mobile phone or computer. Each time I try to log on it keeps asking me to reset my password and each time I rest my password it pute me through a securtiy check asking to reset my password again. I must have reset my password at least 50 times and still not able to get on. I hace cleared the cookies and cashe as suggested on the facebook helpage but I am still getting no where...please help! Joanne