Thrills Casino - Requesting repeatedly a non-existing document

I deposited to Thrills.com casino about 50 EUR and had a lot of fun while playing. I lost over a half of my deposits and tried to withdraw 20 EUR. The casino requested some documents from me, among which was a bill containing my address. I had no bill at hand at the moment. Moreover, though I am registered by the stated address, I am not the owner of the flat and all bills contain not my name. I explained this situation and in addition to my passport (which also contains a page with my address) I provided a copy of the application for opening account at Yandex. Money payment system and a certificate of inheritance rights. All these documents contain my name and the address. The casino kept on insisting on a bill. What do I do then? To buy my own flat and wait for the first bill? Or maybe during a month to spend time and money for becoming the owner of the flat I live in? It's ridiculous. What is interesting, during these conversations with their support via email, I used to communicate with various employees and every new person seemed not to have read the history of my emails. Just an example: finally after multiple emails they said: "If you have some sort of government documents that prove your residence that will work fine too." Wow! Aren't my passport with its page containing my address and the certificate of inheritance rights not government documents? I had sent them in the first email! This illustrates the real attitude to customers in this casino - not attentive, not adjusted. Taking into account the withdrawal amount, it is really ridiculous and humiliating.