Regulators in Vermont and two other states are looking into charges that FairPoint Communications misrepresented its ability to take over the region’s phone network from Verizon during a review by a consultant hired by the states. FairPoint took over the network in February and since then has had an unending stream of consumer complaints. An anonymous e-mail from someone claiming to be a FairPoint insider charged that during tests leading up to the changeover, FairPoint created a computer program to fake a demonstration of its readiness. There’s no immediate response from FairPoint.