Trust funds

My kids trust funds no where to be found, I was told my kids will get the funds once they ve turned 18 years, now one of the benefiary which is my son is 18 I call to inquire on the trust, I was told it was moved to absa and they don't have info on it anymore I should call absa, how was that done without me as mother of the 2 kids notified, they said should have kept track on it, and update them, how could I have done that if was told will only communicate once kids are 18years, please i need answers to this been going everywhere for advice this doesn't make sense to anyone, even absa I tried giving them info on this account but still doesn't add up.. My full names is Boitumelo Sylvia Legae My late fiancé's I. D number *** My contact number ***