ubiSlate retruned but not refund

Location/place: G02, T-8, unitech horizon ,sec-pi2, Gr. Noida U.P.

Name of company/service: seventymm.com

Dear Sir/Madam
I m ravi kumar have purchaged Three ubisalte from Seventymm.com .
But any features not match ,I talked to the customer care of seventymm .com
they told me taht retrun our product ,we will issue check to (refund money)

now i have retruned the product by tracon courier .

seventy mm recieved the same but not agree to refund the money

Oder No. At seventy mm.com
SMA0142773
SMA0142756

complainet No at seventymm
459212
459176

Retrun Tracon courier No.
291211363

Please Do The need full

Thanks & Regards
Ravi Kumar
T-8,G02 , Unitech Horizon, Sect- pie-2
Gr. Noida U.P.