Consumer Redressal

Dear sir/Madam I purchased a Galaxy S3 mobile phone on last january 12th 2013. The handset shows the problem of long duration of charging in the first week it self. Service center people do many things such as soft ware upgrade,repairing etc. On my next visit they replaced the battery charger. it has no problem for charging for a month It becomes faulty again.Also it has screen hanging and data net work problem.During this period I wrote 3 letters to samsung customer care. They informed me that Samsung escalation team will contact.I was waiting for a week.No one contact me. After some effort I got the samsung Kochi office phone number and cell no of Service Manager. Another 4/5 days of continues attempt I got Samsung Service Engineer(Mr. manu) and communicate. I understand that he all ready have details of my interactions with samsung customer care . He promised a call back within minutes.No one call me. I tried him many times on his mobile and office no. Again after 1-2 months