Last year, a friend brokered an agreement on my behalf with a friend of his to store some of my property in their company's storage unit (he is the owner of the company). I was not a party to the original negotiation, and there was no paperwork signed, but I was under the impression that the deal was "for free, indefinitely", until I have the resources to move my property out and store it myself. Since then, the friend who owns the company has been dealing with me directly in regards to this matter, without a middleman.
Recently, the owner has contacted me, unilaterally deciding that I have a month to remove my belongings from his unit, or he will remove and dispose of them himself, in addition to suggesting that he will begin to bill me during this time period as well. I'm pretty sure that he cannot suddenly start charging me (unless it were a month-to-month-type arrangement, in which case I would have the option to continue paying the increased rent to remain, but that's not an option here as he wants my stuff out, period).
Given that there was no formal contract for this arrangement, what are the expectations as to how it legally should work, and what responsibilities/liabilities does/will his company have given that it's in possession of my property?
Jurisdiction is New York City, if relevant.