Consumer Redressal

This is with regarding to the complaint raised with Sony having no response. I have bought a Sony tax on 13-01-2013. i used it for a month and observed that it stopped charging suddenly. I have then dropped it in the service center and raised a service request with Job # 30433379. I used it for a month and again the problem started. I have again droped it in the service center on 12-04-2013 and til date i was not informed anything by the service center guys. Every time I call them, they ask me to wait for one more day and nothing happens. Finnaly i was fed up and has requested for refund as I hardly used it for a month and most of the time it was with service center. Even after sending that written complaint twice with complaint numbers 14133287 and 14201055 there was no response about my refund request. In between i have got a call from the service center guy \"Paul\" on 24th May and he said he will be taking this case and he informed me that he is going to call me in the evening and I have got no response from him then after. Only today i.e. 29th May when i called Paul number(918041201541) to check with the starus a lady picked the called and she said that the tab is now ready. I have actually requested them a refund after waiting for a month having no response and now no one answers me about that request. Its been 5 months since the time I purchased this Sony Tab and almost 4 months it was with service center and now I am afraid as i was left with only 6 months of warrenty and I am unsure if it is going to work properly here after. Kindly consider this issue and help me to get my money back on the product which I have invested which was hardly used by me and mostly used by the customer care team.