audiobook.jpの30日間の無料お試し期間の後、聴き放題プラン年間9,990円に無言で課金されたので憤慨しメールで陳情したら返金してくれた話 After the 30-day free trial period, audiobook.jp charged me for the all-you-can-listen plan silently for 9,990 yen per year, so when I petitioned by e-mail, it was refunded. https://audiobook.jp/user/membership/options/unlimi…