Most small businesses jump into the social media game without having a reaction plan for when a negative customer service incident happens.
Because crisis events can and do happen, your brand should be prepared to address these with supreme delicacy. Sometimes ugly incidents happen that either directly involve your company or not. Posts meant for in-house staff go public, or a certain message is interpreted as misleading or insensitive. Sometimes an event that affects the company in the real world spills over into social media, where it can quickly spread among your followers.