Capitec Assistance to get Refund Non-Existent

I get no assistance from Capitec Bank at all. I am not a client but made a deposit in to my deceased father's account. He has been deceased now for 6 years. As we have the same initials by mistake I transferred money into his account. I have endless trouble in getting assistance. Today when I wanted to send follow up e-mails the e-mails returned. I have no idea who is going to assist with this. My own bank tried their utmost but unfortunately they could not assist and I had to contact Capitec. This boarders on *****ing as the money is rightfully mine. If ever I considered to move to Capitec that thought is long gone.