Poor service

Hi. Im writing this on behalf of my mother. She was contacted by Lancelot to advised that my dad is owing money. First of all, my dad passed away on the 18/06/2024. I first queried accounts received by Lancelot on Hellopeter on the 21 Oct 2024 at 12:53 pm. I received feedback a few months ago that the accounts was settled by the medical aid. Someone by the name of Babongile Mahlangu called to advise me. She also sent an email advising that all accounts have been settled by the medical aid. I have all the email proof. Now all of a sudden my mom gets more bills from Lancelot advising that she owes R10,605.63. I need someone to contact me on ***. I want to know where have theses bills come from and why did the medical aid not settle the accounts.