RETAIL services The retail traineeships are the premier product of TDA. The Retail industry is a pillar of the economy and one of the fastest growing and maturing industries. As competition has increased and more business move retail online, the main differentiating factor for traditional retailers is the quality of the customer service experience. TDA can prepare you for the future. At TDA we train staff to be better able to adapt to changing customer needs. We empower employers with flexible training packages to the suit specific needs of the business. Training brings increased motivation, morale, greater product awareness and sale outcomes. TDA offers the following Retail Traineeships.