Go to the post office in person. Around here they never answer their phones.
now that i read your post, i do remember that when i called my city post office (200,000+ suburb), it was some post office call center. the post man was mad that i hadn’t picked up the mail in a week so even though my box wasn’t full, the post man took it all away, left a note that i wasn’t getting any more mail and i had to go downtown to pick it up. i tried to call my local p.o. and got somewhereville.