Amazon India — Not yet refund my amount

Address:	Pune, Maharashtra, 411028
Website:	Www.amazon.in

I have place a order on 2feb'17, ie.Avsar New Collection 18K (750) Yellow Gold and Diamond Pendant with order id[protected] and amount is 3190/- as shown in picture.
As i get material on 13feb but the quality and finishing of that gold was worst so i immediately registered return pickup on same day.As i got a date of reverse pickup on 14feb between 8am to 11am even go through below picture but no one came for pickup on given time.That pickup boy came at evening and he was very rude and he didn't take my material from home, he said that give your material nearby location.So i reached there and gave that worst quality material.
And he said that your amount will be refund within 24hour.
But till date i havenot receive single amount.
And amazon customer service dont have any curtacy that they should update me about the refund status.Not even single call i get from amazon.
They always show negligence regrding refunds.
Reverse pickup address- Flat a405, chaurang society, mahadeonagar, oppo am college, 411028.
Pickup tracking id[protected].
Kindly help me to get my money back even they have taken that mterial then also no one refund my material.
My contact [protected]