None of them can be trusted because they are scam schemes that rely on pessimism of people losing their cryptocurrences. Those services ask for payments in advance or to share the private keys which can be used to steal the rest of the funds.
Another reason to not believe those services is that they all pretend to have some non real skills like hacking the blockchain or tracing transactions, which are impossible missions without cooperation with legal institutions or sharing sensitive data.
Most important is the lack of regulation that makes it easy for scammers to disappear after getting money without providing any real solutions.