Brand Name / Business Name Conflict: DMCA takedown on my original content

Has anyone dealt with something like this? I'm not sure what my options are.

DMCA takedown on my original content. I've been dealing with this for about 14 months now and the situation isn't improving.

Should I hire a lawyer for this or try to handle it myself?

I think half the threads here are about this exact issue.

I had to go over their head/manager. It took 1-3 months but was worth it.