250 Euro's is not much. I mean, I assume you're not a poor person since you own gaming consoles and are on VGC. so its not the end of the world if you don't get your money back. Of course, that's how I would deal with the situation. If you're brave enough to go and confront them then you can do that too. 

Lol damn OP you're pathetic. Lighting a match and ruining peoples locks and getting "revenge" over €250?

I genuinely laughed at how pathetic you were.

Sounds like you could be one of those who don't deem necessary to pay back their debts. I already explained that it's not the 250 euro I'm bothered that much by but how they treated me, it would be nice to give that medicine back to them.

That happened to me once, but it was only about $40, which was actually kinda alot because I was like 10. I still know thats not as bad as 250 euro, but still.  I just got over it. Another thing that was even worse for me, my friend was moving the next day and came over to say good bye. The next day after he had moved, I found out my gameboy advance sp was missing that had my pokemon sapphire game in it that had a 200 hour+ save file, so I guess he stole it.

Depending on the amount I would either fap away my anger or hunt them down and cut off their balls and then hire a hooker to have sex with me in front of him to mock him

You are cold some people have a hard time making it, unless this people are living an extravagant lifestyle you should cut them some slack. But I do agree you should have kicked them out after being a few months late

I would stop lending money to people who don't pay me back...

Yeah, I agree. Maybe they are unemployed and are struggling to survive, or owe money to many people. 

Yeah, I'm sure you treated them always very respectful and were the victim of their unbearable ill-treatment (not answering calls, but moving out without a hassle and huge damages), if you describe them as "scum", "snakes" and finally thell them to "fuck off" when they have to move out within a week... gee, I wonder why that "snake" was first worried when you knocked on their door and was staring at you suspiciously when she knew they are in a debt they can't pay.

Me and my family had money troubles in the past and anyone who has not been through it has no idea how it is. It seems when money is at its lowest is when you need it the most and you have to do things to stay afloat that put you behind even more. Its a terrible cycle.