Discovery Health adding paid services without consent

I joined Discovery Health last month and agreed to being double billed to cover the current month as i was travelling for business and needed to be covered in case of emergency. but when my debit order goes off extra paid services were added and double billed. If i`m not mistaken, that is against the law... which doesn`t seem to stop Discovery. When i call the helpdesk, the drop the call and when i log a complaint, they never respond!!!