Ringing Bells — Amount paid and phone not received

Address:

560016

Last sept, 2016 i purchased a silver card paying rs 500. The feature that i can buy product at discount rate on ring bells website and a freedom 251 will be delivered free along with silver card.
I just received the silver card (Royalty card) and a letter mentioning that the phone will be delivered on or before 31 dec. (They did not mention the year - i assumed that it should be 2016).

When tried reaching rb customer care, no response.

Now it's more than 6 months that i haven't received any update about the phone or money.

Please advise