The worst whatever you want to call it because there was no service rendered

For over a year of back and forths submitting information for my late father's account, my mother who is now in charge of his estate late account in addition to hers has been given runarounds, information submitted multiple times and through dozens of calls, she is told everything will be sorted. still, the accounts have not been verified. the last person who spoke to her in my presence assured her the unclaimed funds will be in her account the next thursday (that was in July) to date there is smses and emails still saying her estate late account is not verified. My father died over 13 years ago so now i dont know if the plan is to get this now 68 year old to die for the benefit of old mutual or what