Termination of membership

I was a member of Medihelp medical aid. Last year i was admitted to hospital for 3 days. They paid some of the money but some of the doctors were not paid. Towards the end of last year i couldn't afford to pay medical aid for one month and it was terminated by Medihelp. Beginning of 2015 i got a call that i owe one month membership fee. I could not believe cause the membership was terminated, how can i pay while i cannot afford. Now i'm being threatened by law. And i told the lawyers i don't have money to pay. Why can't they understand that. These people are taking advantage, Medihelp please pay the doctors fees that you didn't pay last year. I will pay you when i have money. This medical aid is robbing people.