If you redial, do you not lose your place in 'the queue'? I usually just leave it ringing out, on speaker, so that when a human answers (sometimes after the best part of an hour, once longer) I can engage with the conversation. Mind you, after a message of 'Your call is important to us...' every 15s (is that really necessary?) sometimes I'm so punch drunk it takes a few seconds to recognise that a person is speaking to me.