Infibeam.com — i haven't received the item number 13069592 docket number DTDC D14951682, item is not delivered

Address:

Bongaigaon, Assam

dear sir,
i booked one LG ac i booked the item from you because i was getting it at low price than
local AC shop from INFIBEAM.COM of order number 13069592 which was booked on 15th may 2014 of DTDC courier docket number D14951682 .the item is not yet delivered till now. but on the status it is showing delivered at my address bongaigaon assam NTPC ltd...i conveyed my message to infibeam to refund but they are not doing anything, , either item delivery or refund. please help on this issue to resolve