Listening to bad music, perhaps

• Having to wait
• Suspended, in a way
• Listening to Muzak
• Waiting for a phone rep, maybe
• Waiting to talk on the phone
• In telephone limbo
• Listening to bad music, maybe
• Waiting to talk to a real person, say

Wiktionary Word definitions in Wiktionary
vb. 1 (context transitive rare English) To hold on (to). 2 (context intransitive rare English) To hold on.