No help at all

What do mean "in another person's name"?

My Phone

Your phone?  An added phone?  Or account and bill?

Prepaid?  Postpaid?  

New customer?  No?

How long have you had the account?

Explain better 

is in this unknown’s person name

Explain better?  

I called and they couldn’t help. They sent me a fraud link that doesn’t help my situation.

If You own an AT&T account in your name and an additional phone and line has been added that you are paying for but did not order or ask for that would be fraud on your account.

    Is that it?

I’ve been paying this phone for over a year and need proof of it

Proof of what?

because I have cancer and need help paying my bill.

Again please explain better.

There is no assistance if you are on able to pay your bill for medical reasons.  At least not from AT&T.

Who do I call,text, email etc for this.

AT&T does not do customer support via email contact.

What sort of contact have you had with AT&T so far other than filling out a fraud report?

I think the reason you're not getting help is no one understands what the problem is. You certainly didn't explain it very well in your first post