My question involves landlord-tenant law in the State of: Wisconsin
Last weekend I signed a 6 month lease. Prior to signing the lease, the landlord said that he would require a co-signer on my lease due to the fact that I've only been employed at my current job for a couple of weeks. This was no problem. He then decided that he wanted me to pay 6 months worth of rent plus the security deposit up front before move-in. This was all discussed via email. I agreed to this and wrote him a check upon signing the lease. However, after doing so, I was told that it was illegal for his to do this and I immediately stopped payment on the check. I proceeded to write him a check for my security deposit and one month's rent instead. According to the lease that I signed, this is all the was required upon move-in and I would be given my keys. Nothing that I signed stated that 6 months' rent was required. After giving him the second check, he informed me that our agreement was that the rent be prepaid, therefor there no longer was an agreement and I would not receive my keys. He kept the check. So here are my questions:
1) Is it legal for him to charge me 6 months' rent in advance plus the security deposit? If so, am I contractually obligated to do so if I did not sign anything agreeing to it?
2) I am currently living in the apartment with no keys. All of my things are unprotected. Can he legally keep my keys?
3) We signed a lease, therefor we have an agreement whether he says so or not, correct?
4) Can he evict me for refusing the prepay my rent?
5) What exactly are my rights in this situation?

