Charged without consent
Looking for advice. I recently called my Accountant for general tax information/advice (the information could easily be googled, but he said to call him anytime if I had questions). Well I did call him, and we chatted for 30-40 minutes. I then received an invoice for several hundered dollars a month later. I was not informed the phone call was going to cost money (obviously I wouldn't have bothered calling if I knew it was going to cost that much). I had no idea it was going to cost money, or how much.
I'm looking for opinion/advice. Is this normal? Ethical? I'm in shock.