Real Estate / Help urgently - problems with the owner of rented apartment in Poland [6]

I rented an apartment in Krakow in Feb 2018, in November 2018 the owner started to harass me and my husband with several concerns.
For example they never let us pay by deposit, because they are trying to withhold the taxes and not paying for it.
I have always paid before the agreed date. And have always paid the bills they said I should pay, even not knowing what exactly I was paying. They only used to say: we paid $$$ amount for the electricity bill and I never knew if it was my expenses or not.

So they were bothering us so much and I texted a message saying that if they did not want us in the house, they should tell us and we would leave.

He answered as: We don´t want this "type" of people living in our house.
I never really understood what he meant with it. Because as I said I have always paid everything correctly and I really don´t know where that came from.

I left the apartment (everything in complete order) without giving any notice, becase I was scared of their behavior.
What can I do?
Do you think I should look for a lawyer?
I still need to pay 3.300 zloty for the entire period up until the end of the contract.
please help