Amazon India — No deposit promotional cash back amount from last 2 months

Address:	Kolkata, West Bengal, 700041
Website:	www.amazon.in

Dear Sir/Madam,
I have ordered a product on 16th October 2015 with order No.[protected] through amazon.in.
As per promotional offer of that day (I have the promotional offer mail documents related to this cash back offer ), cash back Should be credited to customer account by 17th Jan 2016 but As per amazon customer care it will be delayed to 31st Jan 2016, I wait till on that date 31 Jan 2016 but yet I have not receive any cash back. Even after several follow up with the customer care of Amazon I have not got any affirmative response of getting the cash back. They are telling to wait for some more time and delaying.
I have mailed to amazon.in and they accepted to this valid cash back and telling there was a problem with him and they will credit cash back but several follow up there is no positive response.
Please suggest me what to do . because I have suffered from a lot of mental harassment for this. Please help me as soon as possible.


Thanks and Regards
Atul Gupta
[protected]@gmail.com