Amazon India — amazon didn't send my money back (refund) 945/- in past 2 months.

Iam booked a order pedigree pro in august
They are still trying to delivery the order
Every week the delivery estimation date changing
Then i cancel the order and i want my money back
I called them more than 2 times a week. Amazon customer care said to me they are refund initiated but money was stuck in bank. I contact the bank, there is no initiated my money. Then i call the amazon customer care but calls was disconnected automatically. What should i do
Iam a normal ordinary customer