My question involves landlord-tenant law in the State of: IN

I terminated my lease on Oct. 17th. It was a year lease. When I first rented from Property Management Company, I was in another unit. I had a totally different lease. A month later I was moved into another unit and was required to sign a new lease. My security deposit was transferred to new unit. In the valid, current lease, there were major clerical errors such as lease terms (in lease stated 10/19/2013 to 10/19/2014 and rent in the amount of $240) all of which is incorrect. 1. In Indiana, the landlord is required to send an itemization/security deposit within 45 days after providing forwarding address which I did. It is now Jan. 14th and I never received anything. 2. They have sue me in small claims court, and the first page of the lease they attached has been forged. They went in and corrected lease dates, rent amount, and wrote my son's name in the occupancy space, and my initials and the property managers initials at the bottom of the page is now missing!!!! They also modified the second page of the lease. I have a copy of the lease. I hate sneaky, deceitful people. What is my recourse for forged documentation?