Amazon India — Refund not received after 1 month also

Address:	560075
Website:	Amazon.in

I purchased 4 products from Amazon out of which I returned 3 and the refund was initiated on 4th of December, 2016 but I didn't received the amount yet. The Citi bank is asking for a 23 digit reference number for further verification. First Amazon told that they do not have any 23 digit number later they agreed and told that they would be providing the number in 24 hours but I have been calling them from past 45 days and everything the response is same. I am not getting any help from Amazon. On 27th December, I received a refund of 799 which is the amount of one of 3 product and it was initiated by Amazon. Both of this things shows that the amount is pending by Amazon. I have purchased many things from Amazon and returned couple of them and I use to get a refund immediately. This is the first time it is taking it so long. I want to understand the problem and get my money back. I called them today also I get the same response that they need another 24 hours and the same was told to me last week also. Moreover the senior person whom I spoke with disconnected the call. Right now I am waiting for a refund of 595 and 699 Rs. Please help me with this.