BAD BAD BAD CUSTOMER CARE IN ESTATE PAYOUTS

MY FATHER PASSED AWAY ON 01.01.2021, I SUBMITTED THE DOCUMENTS FOR THE BALANCE OF HIS MONEY TO BE PAID OUT TO THE ESTATE ON 7 FEBRUARY 2021, WHERE I WAS ASSURED IT WILL BE PAID OUT IN A MAKSIMUM OF 15 WORKING DAYS, ITS BEEN 25 WORKING DAYS AND UP TO NOW, NO MONEY HAS BEEN RECEIVED. WHEN I TRY TO PHONE THEM NO ONE CAN ASSIST ME. IWAS GIVEN 2 CELL PHONE NUMBERS TO PHONE AND NONE OF THESE PEOPLE EVEN WORK FOR POSTBANK? I HAVE SENT EMAILS TO CUSTOMER CARE, AND ENQUIRIES AT POST BANK, NO REPLIES RECEIVED UP TO NOW.