Need Help lost my main account

My problem is that when i try and log onto my mircosoft account it says i've entered an invalid user/password too many times and then is asking me to enter the captcha code and try again and when that all fails i then try to use the two options for recovering your account via text or call and the email back email option but the phone number it texts is my old phone number and the email is my uncles old account that he has no access too anymore so i'm not sure what to do from here??? I've also tried the form that is the third option but it is asking me to remember emails from over a year ago and it's just not working i was told by the customer service rep that i need to fill out every answer on the form for them to even look at it... Please help asap.

Thanks, 
Brandon.