Worst billing ever, sent me a bill 9 months later ...

Worst billing ever, sent me a bill 9 months later that said last notice! $122.00 With no prior notice!!!!!
I've lived at the same address for over 11 years ! I work with health ins. for seniors, and if you want to report them the best you can do is Better Business Bureau, really!, like that means S*&t ! Doctor is great , but the reverend health billing BULLS&*T!