So, another funky update:
This morning I received a letter. The postman deemed it so important that I had to sign to prove I received it. After a small back-and-forth with the postman, I signed the document, received my letter and continued to read it. It was my landlord's debt collector who had written me. When I finished reading and taking it all in, my mother called me. She had received the same letter. What a coincidence!
The letter stated that I hadn't paid the €1229,67 yet. At least they got one fact right. Because they are so generous, they are giving me seventeen days to pay. The last letter, from July 17th, only gave me sixteen days. Now, if my math is correct (and it rarely is), July 17th is 39 days ago, so I might have not paid in time indeed. Anyways. They're claiming they're going to sue me and my mother. Now, my mother is married to a guy. And this guy doesn't like being sued. He's working on a letter (and it contains a LOT of swearwords), which will be funny to read once it's finished.
In the meantime, to reply or not to reply, that is the question. Sending another picture of me laughing at them seems like a funny joke, but I feel it's passed its funniness. Therefore, I've replied this time with this picture of my cat, to pay for all the damage I've caused them: