<prompt> Translate the following text to SwahiliThese 1 approving both changes in existing services and the establishment of new services---those are known as classification cases; 2 adjudicating complaints from anyone who believes the Postal Service is not providing rates or services as required by law; 3 issuing advisory opinions when the Postal Service proposes a substantially nationwide change in the nature of its services; and, 4 our mostly recently assigned task, providing Congress with annual reports about the costs and revenues of international mail.  <response>: Hizi ni: 1 kuidhinisha mabadiliko katika huduma zilizopo na kuanzisha huduma mpya - hizo zinajulikana kama kesi za uhifadhi 2 kutatua malalamiko kutoka kwa mtu yeyote anayeamini Huduma ya Posta haitoi viwango au huduma kama inavyotakiwa na sheria 3 kutoa maoni ya ushauri wakati Huduma ya Posta inapendekeza mabadiliko makubwa ya kitaifa katika asili ya huduma zake 4 kazi yetu ya hivi karibuni, kutoa Bunge ripoti za kila mwaka juu ya gharama na mapato ya barua ya kimataifa. 