You actually have rights as a tennant. Take all the written communication between you two, and go talk to a real estate attorney. A verbal contract is still a contract, and if you can support it with written communication, especially an attempted notice to vacate, you have some legs. Depending on the state you live in, he has to give you more than 3 days notice to vacate. The shortest is North Carolina at 7 days, but it's a pretty standard 20- 30 days generally.

Whatever you do, don't damage anything, because then you're on the hook to pay for it. You could even land in jail, depending on the amount of damage.

Find your state here: https://www.nolo.com/legal-encyclopedia/state-rules-on-notice-required-to-change-or-terminate-a-month-to-month-tenancy.html

Find how much time they have to give you, and remind them.If they're amiable, then no problem. But otherwise, IANAL, so go consult an attorney before all else.