BAD SERVICE AND UNPROFFESIONALISM

How does one get an update from Nedbank deceased estate department as they cannot be reached by telephone ? On the *** I requested information on the account of the late P W SITHEBE and have I have been awaiting a response since then . This is terrible and bad service as this causes unnecessary delays on our side as we need to finalise this matter.. Nedbank has also not responded to emails sent to them .