I feel like my hands are tied with MetLife

I have had a hard time getting anywhere with MetLife on my maternity leave claim. They delayed my approval to the point where I went one month without pay and stated I was only approved for less than 6 weeks from my delivery date. I worked up until my delivery date and had what they call a dry labor and delivery and had to be induced 3 weeks early due to dangerously low amniotic fluid. The 5 day review process has taken over 10 days each time my doctor or I send a fax. I have worked for my company for over 10 years and feel like no one cares especially MetLife. I need help getting them to review my information within a reasonable timeframe and need them to understand my doctor will not release me to return to work at minimum 8 weeks due to the nature of my delivery. I feel like my hands are tied and they are being anything but helpful.