Consumer Redressal

Dear Sir On 4th September 2013 I have purchase two no. of Pen Video Cameras against my order Ref.No. 25254777 by paying Rs.2932/-(through credit card) from The 100Bestbuy.com.After receiving the delivery,on checking I found that there problems with one unit,viz. a)On all video frames there is a diagonal red streak b)The sound is not getting recorded with the video.After that The 100Bestbuy.com requested me to send the defective material through speed post.As per their request I have send one defective pen camera via speed post consignment no.ew233530029in on 27/9/2013 to The 100Bestbuy.com,C/O, Suksh Technology private Limited,Salarpuria Hallmark,15/3@16,4th floor,Kadubeesanahalli,Outer Ring road Bangalore-560087.Ph.No. 080-67536400 But till date we have not yet received the defective replacement against after several telephone calls and email they are not at all responding. Under this circumstance I need your help to get the replacement.