I got married recently and wanted to change my last name on Fb. I had to reset my passw...

I got married recently and wanted to change my last name on Fb. I had to reset my password to do so because I couldn't remember it. While going through my personal info, I noticed that a phone number I no longer use was listed and I tried to delete it. Fb then asked me to confirm my identity. I was asked to pick between * options, picking comments I personally wrote in the last * months, or identify people from my friends list. Long story short, I went through both options, repeatedly being told that they couldn't confirm my identity. More options where listed, but I couldn't pick either one because I either no longer used the number that was listed so I couldn't have a code sent, or to use another device. I dont have another phone or even a computer. So here I am, not knowing what to do and I cant get into my account. Facebook "help" is completely useless and of course, they're too good for an actually phone help line which would likely solve all my issues. Please, please help. I have no idea what to do and feel like I'm stuck at a dead end. **The email I'm using to hopefully have someone contact me is not linked to my facebook account. Something else I need to change.