Kendra Duggar learned how to communicate with her husband, Joseph Duggar, from jail after he was arrested for alleged unlawful sexual activity with a minor. "Oh, so [it] costs money for you to call me each time?" Kendra, 27, asked Joseph, 31, during a phone conversation while he was in custody at Arkansas' Washington County Sheriff's Office late last month, per audio obtained by Us Weekly. "Do you need more money?" Joseph explained that he initially had $60 for phone and other privileges, which was determined based on the cash in his wallet when he was booked at Washington County.