@hazardwarning Yes, I was introduced to that scheme when I moved into this apartment.
It may be near impossible, but it took just 5 minutes of my time to send him an email every other day, and not an awful lot to send a few letters. Even if I can't get my money back — and my parents wrote that off so long ago they told me not to even bother chasing after it — I can make his life, and the agency's, just a little more inconvenient.
But I do fully intend on taking it to court if I can. Apparently it doesn't cost an awful lot — just takes time and persistence. Again, that small cost is worth it to bother him, if only a bit.