Amazon India — refund not sent by amazon.in

Address:	Korba, Chhattisgarh, 495452
Website:	www.amazon.in

Sir i am md shamim and i have bought an backpack from amazon.in on 21 june 2017 i placed the order but due some reasons i returned the order to amazon.in on 27th june and they told me that i will get the amount within 2nd july but i haven't received it so i contacted them then they told that i will get it within 4th july but that time also passed and i not got the refund. Then i contacted the and the given me the refund reference numbers, they are
#[protected] and #[protected] for rs 445 and rs 50 respectively, and told me that to contact the bank's customer care and give them this numbers and they will locate your refund but when i contacted them they told that they cannot give any information through this and i have to contact amazon.in but amazon kept on saying that they have processed my refund and i have to contact the bank for that. But it's my money and it came from hard work so i tried the bank customer care once more and told that somebody sent me money (I told somebody not amazon.in) but it is not in my bank account yet then they asked me the medium of transaction then i told neft so they asked me the utr number but i have no utr number so i contacted amazon.in but they told me that there is no utr number and the refund reference number is the same as utr number but when i checked the internet the utr number is alphanumeric but the refund reference number is numeric so once again i contacted amazon.in and asked the utr number but they are not ready to accept and always telling that their billing team will contact me and the billing team is only telling that they have processed the refund and giving the refund reference number.
I am unable to help myself.
As a human please help me to get my money back as early as possible.
Please help me sir/mam.

Invoice number: dl-sdef[protected]
Order number:[protected]
Pan no of seller: byhps8941j