Password recover

Hello to all of you! Yesterday, I tried to log into my account, but for some reason my password was not accepted. I tried it several times but nothing happened. The next step was to use the recover procedure, but the emails that I received from Microsoft informed me that the information that I provided was not enough. I think that I had never entered my credit card data, in order to verify them now. What should I do? I am in real need of this account as the last days I have been sending and receiving crucial mail for me.