Amazon's customer service line reminders

I recently purchased the Sony HT-DDW995 Surround Sound System on Amazon only to have it drop in price by $30 three days later. No problem, Amazon will refund the difference.

I was on hold for ten minutes, and, due to my pet peeve about repetition, I started wondering how often the on hold computer reminds you that they'll "be with you shortly."

Since I had nothing else to do while on hold, I measured it.

Result: An average of every 15 seconds.

Do you really need to remind me that often that you'll be with me shortly? It's like some form of Chinese audio torture.