Lois is a longtime American Express customer. She’s had an AmEx card in her wallet for longer than most Consumerist readers have been alive. When she received a mailing offering 50,000 bonus reward points and extra privileges for upgrading her account to a Platinum Business card, she went for it. Except she never received the reward points. Or the airport lounge privileges. Or, apparently, the upgrade to a Platinum Business card. [More]