absa deceased trust

my husband passed already two years ago. back then i had problems with absa for losing my documentation for the completion of the trust. once again after two years not getting hold of anyone at the master high court i managed to accidentally talk to someone there who checked for me and said they never received the documentation. i urgently need to get an letter of authority. i was advised to call the deceased estate department of absa in which i did and said i must to talk to a lady named melanie. got her telephone nr which is always busy or just ringing. i even send an email to query what has gone wrong with no success.

i am litterally gatvol.