@82mhz After 10 years, they can't do anything about that. So you're not a criminal anymore 🙂
I've had problems with Enel, too. When I bought my first house, it had just been build. Enel had a non existing address (a nearby street, number was 99999) and, despite the fact I sent the correct address, they started to send the bills to that nonexisting address.
So I didn't receive - and pay - the first bill. Long story short, one day they reduced my power. I had to contact them and pay (!!!) 70 more euros because of the procedure of lowering my power. They also said it was "my fault" because I had to call them and check if I had pending bills, after a couple of months (!!!). I got angry and wrote this was absurd - but nobody replied.
Things have changed, but those situation are still quite common.
But hey, don't worry. If they'll arrest you, just tell them you're going to call the Barista. They'll immediately let you go and beg your pardon. 😆