I manage a property where the tenant has paid rent on time for the first few months but the last 3 months the tenant has paid late by almost 20-30 days. I usually reach out to him once to twice a week asking when rent will be paid as well as charging late fees twice a month like stated in the lease and sending out 3 day notices. Rent is due on the 1st and this morning I asked when he will be paying since I know he'll be late, I followed up by saying after this 3 day notice we will file for eviction. His response was "I am going to go downtown and file a harassment suit, I have always paid the rent, it has never been a month behind, renters have rights and this is a form of harassment. In the state of Florida you have up to 90 days of being behind to be evicted and there’s nothing in the lease stating anything about eviction if rent is not paid by a certain time period". He also sent another email stating "Evictions are normally for people who do not pay and I have always paid. I am going to go by everything that is agreed-upon in the lease, other than that I will just go file a claim in civil court. Once I pay rent this month I want an energy audit, or I will have code enforcement involved. I had our energy bill looked at by 2 people and they both said my bill is way to high and i need to get an audit done".
My question is can he actually file a lawsuit against me or is in the right to do so for "harassment" in this case and would anything happen to me? And regarding the energy audit and code enforcement is that my responsibility or just something I should ignore since utilities is his responsibility?