Money disappears from a paraplegics deceased estate account

My 72 year old mom has been given the run around for over a year now for money that was withdrawn from my dad's estate before it was winded. She was notified that it was ***** & and an investigation was held. She was promised to receive the money but still nothing. The branch submitted the info required however it's just gone into `space''. No one has any info or feedback. How's that for a BANK!!!! PATHETIC!