Sony India — Problem regarding working

Hi.. its Harpreet from Ambala, Haryana..! i have brought Sony Xperia E dual 8 months back. some where its working was okay.. but now m start facing the problem in the handset.! its start hanging and after every 1 minute its a pop up on my screen that such app is not responding wait for it or report.. again another app not responding and again an again..! such an irritaing issue..aftr dat i updated my xperia e dual with the latest android version of it.. bt still the same issue.! m dissaponited with the product.. its not hve cmpleted evn a single year.. and probs are at high phase.! so i[censored] cud then give meh way out of it soon..!