Tried calling to get information for my sister's m...

Tried calling to get information for my sister's medicaid. Was on hold for 20 minutes and then it said "we are experiencing high call volume please hang up and call again" and there is only 5 minutes left until they "do not answer calls" even though the office closes at 4 o'clock and its 3:45. Bad service I can't imagine whats more important to them then doing their jobs.