Lack of communication

My dad passed away a few weeks ago and he was the principal member on the medical aid so I informed momentum via email of his passing away. I received an email lastnight with a continuation form for my mum so we could make her the principal member, nowhere on this email was I advised that the medical aid has been terminated and that my mum would not be covered until I submit this form back even though we have already paid August subscription for both my parents. I did have another query and called the call center this afternoon only to be told that my mum is not covered on the medical aid any longer because the principal member was removed. So I enquired about what would happen if my mum had to go to the doctor or even hospital and I was told that she would not be covered by them until we submit this form. I am extremely disappointed and angry because if I did not call today I would have not been made aware that my mum was not covered on medical aid event though we have paid for her.