Indian Bank — payment not yet received

Address:

Chennai, Tamil Nadu, 600062

I paid the 696 rupees (446+250) in my master card to amazon. Since the product was canceled they intiated the refund on january 14, 2019 and have given me the reference id
Ref id : for rs. 446
75503729015026216300604;
Ref id: for rs. 250:
75503729015026215746187;
Respectively. When i contacted amazon they asked me to file a charge dispute form. Its been 25 days i am running around for this issue