Convertible Note Issue - VC demanding 2x liquidation preference

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

VC demanding 2x liquidation preference. I've been dealing with this for about 16 weeks now and the situation isn't improving.

I have already tried to resolve this directly but the other party is not cooperating.

Has anyone been through something similar? What worked for you?

I mean i was in your shoes about 6 months ago. Lawyer helped me sort it out pretty quick.