A big T-Mobile Shell gas discount promo drove a rush of customers trying to redeem the deal—so much demand that it reportedly caused long lines and even system issues. When promos go viral, customers don’t blame the fine print… they blame the carrier and the app. For dealers, this is a retention moment. If you can help customers redeem (or at least understand what to do when the app fails), you become the “fixer,” not just the place they bought a phone. What happened (in plai