I do not particularly like to talk on the phone; I almost always request that my husband make the phone calls to arrange social events and, aside from my mom and my sisters, I rarely rarely call "just to chat."
But when it comes to calling in order to save myself some money (or to get back money that belongs to me), I am on the phone in a heartbeat. I think lots of people just don't want to make the effort to make a call and complain or make a request, but since the payoff is usually quite high, I am completely willing to put aside my discomfort on the phone and spent five or ten minutes keeping my money in my wallet.
I've waived bank fees, had late fees refunded, rebooked hotel rooms when the price dropped, asked companies to meet competitor prices, and had automatic payments refunded when I'd forgotten to cancel them. None of these have ever taken very long and it has saved us, I'd estimate, at least $1000 over the last five years.
Are you willing to make those calls?