Property Boundary / Easement — landlord keeping entire security deposit

I'm dealing with a situation and need some guidance.

landlord keeping entire security deposit. I've been dealing with this for about 13 months now and the situation isn't improving.

I have been renting for 3 years. My monthly rent is $3,242. I have a written lease.

What are my legal options here? Is it worth pursuing?

I've dealt with this before.

I ended up having everything documented, which cost about $3-6 but saved me a lot more in the long run.

I had a similar issue and ended up consulting with an attorney. It was worth the $200-300 for the initial consultation just to understand my rights.