Please help with estimated tax penalty avoidance

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

estimated tax penalty avoidance. I've been dealing with this for about 15 months 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?

Classic scenario honestly.

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

I've dealt with this before.

I ended up escalating to a supervisor/manager, which cost about $1-3 but saved me a lot more in the long run.