Amazon India — r88 antiviral drops pack of two not delivered

Sir i've ordered an item from amazon on 16th of march and the expected delivery date was 21st of march but the order not get delivered by the last date and i contacted amazon at least 10 times in a day that when'll the order get delivered and at last the order get delayed and the expected delivery date is 28 march and when i contacted to amazon for this issue then they don't hear me they cut off the phone. So sir i request you to take the action on it as the payment has already done on this order.
Thankyou