The worst customer service for a health care provi...

The worst customer service for a health care provider ever. Very frustrating in scheduling procedures, securing preauthorization and notifying patients. Must be former Comcast employees ?? I can only hope that the level of actual health care is not commensurate with their customer service
A) Extremely difficult to speak with anyone
B) Do not respond to their voice mail
C) Do not follow up with patients
D) Display poor customer care (phone etiquette)