Yes, they are useless. But it is registered so at least they can't claim it never existed... Can't tell you the number of pacakges that we never received from Empost before we realised that it needed to be registered or sent by DHL to be safe
Was the parcel sent registered mail? If not, then there is a 50/50 chance that you will not ever receive it... things have a habit of just flying off the docks here...