Which statement about call centers in the United States is accurate? Multiple Choice Call-center functions have largely been returned to the U.S. from countries like India and Mexico. Call-center functions have largely been brought back in-house from third-party companies that specialize in call-center operations. There has been some shrinkage in the number and size of call centers due to the rise in self-service web or speech recognition technologies. Call centers have replaced instant messaging as the technology of choice for resolving the complaints of younger customers.