Service still working?
Since you sent me a PM, I'll respond here: I can't tell you if it's still working

OP hasn't been on Bitcointalk for a while.
Is it possible to reverse a deposit?
No. Bitcoin transactions are irreversible.
Why would you use a custodial wallet (
that lies about fees) for any substantial amount anyway? There are many wallets that don't require you to trust an anonymous third party.