I haven't decided whether DO did the right thing or not, but to be fair, your analogy should be more in the line of "they evicted me and burned everything of mine in the apartment".
It's a completely different story if you were late by 1 day and they sold all your stuff the next day.
I guess the question here is if DO waited long enough before deleting their droplet. They were over a month late, and I'm assuming they sent notifications....