For lack of another comparison it reminds me of dirty cops pulling over a suspected criminal or known criminal and acting like they are doing the person a favor by taking all of their drugs, money, and loose possessions. It's a fucked up and weird world we are living in. Gotta protect what you can how you can.
I was always extremely scared of that happening to my account. I was making fairly good money, but it was hard to trust it with all of the random shutdown stories I read about. I tried several alternatives, but none paid anywhere near as much. They effectively had a monopoly on the online advertising market.
Go to your local police station and file a report for criminal fraud?
If the police/DA/whoever just ignores it, or measurably doesn't care what comes out of it, you should be able to start legal action against them for what basically boils down to 'too incompetent for this job', which by the way is even possible for judges, but the bar for it is high, and won't be hit unless the judge was careless in his misbehavior.
Over 70€? You're better off working for a day at a minimum wage job. I'm not saying this is fair but the amount of work involved to (successfully) bring charges against someone who isn't following up on a claim you made would be way greater.