****ty Service

Have a surgery hospitalization claim that was preapproved but they did not pay the service provider now i have lawyers calling me day in and out. The is a rude customer service lady that was helping me now all she does is avoid my calls and emails and hangs up my calls every time i call. Today alone i called 6 six times and when she hears my voice she just hangs up. This is totally unacceptable. its a year later and claim is not paid. If this issue is not resolved in a week i am taking this issue to the CMS.