ما حكم الشرع في معاملة موظف يبيع بطاقات الهاتف ويحتال على المشترين برفع السعر لاحقًا، مع العلم أنه موظف حكومي؟

Selling cards has three scenarios: First, an agreement on a price (30 dirhams) which must be paid. Second, an agreement on a price (28 dirhams), and there is no obligation to pay more. Third, no agreement on the price, in which case the contract is void, and the cards or their equivalent must be returned. If the seller intentionally avoids agreeing on a price to exploit people, they can be prevented if possible.