Hearing "Your call is important to us" over and over ...

• Having to wait
• Waiting for customer support, often
• Waiting to talk, say
• Listening to Muzak, maybe?
• Listening to bad music, perhaps
• In abeyance
• Suspended, in a way
• Temporarily suspended
• Like many a phone caller

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