Security Question

Hi, I can't access my other e-mail address and it keeps saying my security question's answer is wrong. it's a question I'm pretty sure I'd know but obviously something has happened to where it's not what the answer is, or I forgot whatever I put and can no longer access that e-mail address. I have a lot tied to that e-mail address that I need to get to. It's been a while since I logged on it, and can't remember the password to save my life. I filled out that form/application for account recovery, but for some reason regardless of what account I put in, it put's in some random e-mail address which is not mine, or the one I'm trying to access. I've tried several times and it still says i'm trying to access that random one which isn't mine making this entire recovery process a gigantic nightmare.