If you can prove all of this, particularly the repeated unannounced and unwelcome entries, in court, you can probably establish a "constructive eviction" (legalese for being forced out), because your lease includes what's called a "covenant of quiet enjoyment" of the place in your favor, from the landlord.  If you can't find it in the document, don't worry, because the law will imply that covenant (promise) if it isn't written in.

If you win, you are out of the lease, and owe nothing.