Amazon India — Product I've order not delivered after being paid

Address:

D110 Trans yamuna colony agra

I've ordered the order on amazon of 2 item
One is mass gainer of 2 kg and second Is pre workout of 200 mg. But when they delivered the item in the box it has only 1 item and 2nd item was missing so I made a complaint
And they again send the item to me but it was cancelled before delivering from there side due to the item was wrecked now they r saying we cannot deliver the item we can only give the refund only on Amazon pay balance but the amount of that item gets increased by 100 rs and they r not sending me the item