I can’t sign in anywhere!

I have just turned my xbox on and it asks me for my email address and password, the only thing is, it doesn't seem to recognise it. So I enter different variations thinking it may be them but none work. So, I decided to try and just log onto my old hotmail account yet it doesn't recognise my any of my passwords and it has now come up with a message saying that it looks like someone's been trying to hack my account. So, i go to reset my password but the only email address it'll send it to is the one I'm trying to access! I have tried to fill out the form but because it's such an old account I can't remember and address that I've sent or any contacts on there. I did receive an email back but obviously I didn't provide enough information. I really need to sign back into my xbox account to go back online! Funny thing is, when it was hotmail I had my main account and this one linked and I could switch between them easily.