Landlord Won't Fix landlord keeping entire security deposit — Options?

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

landlord keeping entire security deposit. I've been dealing with this for about 9 months now and the situation isn't improving.

I have been in this property for 7 years. My monthly rent is $2,147. I have a written lease.

What are the risks if I pursue this? What's the likely timeline?

I went through almost the exact same thing.

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