xioami mi4i – didnt recieve the mobile even after paying the amount

Hello,
I am Sangani Raju,
I have booked a mobile phone (Xioami mi4i), in the online shopping site named “UPSIDEDEAL.COM.” I have paid an amount of 12799/- rs to them trough my axis bank online banking account, but was not able to get my mobile phone. the order details are,
INVOICE
08/31/2015
#IN000083
upsidedeal.com
India

Delivery Address-
Raju SANGANI
home
H.NO 8-4-284 A/A
HANUMAN NAGAR,
505001 KARIMNAGAR
India

Billing Address-
Raju SANGANI
home
H.NO 8-4-284 A/A
HANUMAN NAGAR,
505001 KARIMNAGAR
India

Invoice Number Invoice Date Order Reference Order date
#IN000083 08/31/2015 TJOLXXZAE 08/31/2015

Reference Product Tax Rate Unit Price
303674 Mi 4i (White, 16 GB) ? 12,799.00 1

Qty Total Unit Price
1 12,799.00

the above gives full order copy. Now please do help me and i kindly request you provide me back my money.
thank you.