For the month of August, consumer advocate Christopher Elliott will occasionally be sharing some of the questions and problems he receives from readers. In this week’s case, Pam’s job entitles her to a discount on AT&T wireless service — a discount she’d been promised would be applied to all five phones on her account. But only after she’d changed over — and lost her unlimited data plans — did she find out the discount doesn’t cover all her devices. How can she get the company to keep its word? [More]