Notice To Landlord Form Can A Landlord Withhold A Security Deposit Due To Failure To Give Notice?

Can a landlord withhold a security deposit due to failure to give notice? - notice to landlord form

If leasing is my landlord, none of us signed the contract or agreement. I spent a period of about three weeks and took a week in advance. My landlord refuses me my security deposit, since no warning. Is this legal? The State of New York, by the way ..