Possible Clues:

• Calling social worker to meet reticent person
• Pretender ignores one calling aloud
• Forcefully urgent
• One asserting a right to eject one for calling out
• Shell-maker, perhaps a soldier demanding urgent attention
• Person making demand but not one calling out
• Calling out
• That's noisy, so shut up over the insect
• Noisy
• Malt can (anag.)