But without something in writing, it'll be difficult to prove either side. I doubt that the local constabulary will be much willing to mix in, without something written. And doubtful that they'd take your side, as there's nobody to "evict" since there is no lease.
They be less than likely to want to mix into a domestic issue. And you don't have much of a leg to stand on either, since you probably don't have a legal right sublet, without something written from your landlord.
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