Has anybody else had any experiences with insurance companies claiming to be your primary without actually covering you?

I’ve been having a bit of a weird recurring issue for the past two years. I live in Ohio and am insured through medicaid with Buckeye Health Plan. The only issue is that out of nowhere the insurance company Anthem Blue Cross Blue Shield showed up and claimed itself as my primary insurance. This is weird because I never applied to be insured by them and am not on anybody else’s insurance such as a parent or partner. This is an issue because all of my claims are going to Anthem, they refuse to pay the claims and they pile up, I get sent bills and my doctors are having to refuse seeing me because of so many piled up denied claims. I tried seeing if Buckeye was able to do anything because they are my actual insurance but aren’t able to do anything because Anthem is claiming to be my primary, the majority of phone numbers I’ve tried for Anthem are a dead end because it’s an automated system that requires a member ID which I do not have. Today I was finally able to talk to a real person at Anthem for the first time on the medicaid line, they couldn’t even see me in the system and gave me a number for the commercial insurance line. I figured I wouldn’t be on that because I am disabled and can’t work so I wouldn’t have insurance through employment, and the phone number doesn’t connect anyway, and I can’t find a number for a market insurance line. I’ve called the Ohio department of medicaid who can’t see Anthem under my file at all and they sent me to Jobs and Family Services, they’ve been able to “remove” Anthem from my file at all but it would just come back a month later, and now they aren’t able to see Anthem under my file at all. Has anybody else ever experienced something like this? I’ve been on this wild goose chase on a nearly monthly basis for the past two years and nobody I’ve talked to has any idea what’s going on, I feel like I’m going crazy