Warning: severance offer seems low

I've been trying to resolve this on my own but I'm stuck.

severance offer seems low. I've been dealing with this for about 10 months now and the situation isn't improving imo.

I have worked at this company for 6 years. My position is exempt and I do not have a written employment agreement beyond the standard offer letter.

What's the typical outcome in situations like this?

I've dealt with this before.

The thing that gets people is escalating to a supervisor/manager. I'd recommend following the formal complaint procedure instead.

Been there. Here's what I learned.

What trips people up most is filing with the appropriate government agency. I'd recommend gathering evidence first instead.