ESA letters not forwarded by Royal Mail in Benefits and HMRC Posted July 23, 2014 It seems that a redirection service did not come into operation as planned and a letter about ESA was not forwarded. ESA has been stopped. CAB say that the only thing to do is to appeal and that no other benefits will be available. Single mother of two boys aged 13 and 16. Living in privately rented house. Only been there for six weeks after moving from another in a different town. Been on ESA for three years.