Amazon.in — Fraud call claimed to be from Amazon and pretending to me as I won a prize and an offer to get 40% discount on my shopping above5k

Address:

Mob no 6289674139

I recieved a fraud call from Amazon they told me that I won a gift from Amazon for that I have to do shopping from Amazon and pay in their Amazon account they will manually add my order and gift then they will return 40% of my shopping amount to me within 24 hours
In the evening I recieved another congratulatory call from them saying that you have to pay GST amount of your gift of dell laptop it will be refundable within a minute that I refused and they stopped receiving my call
I trusted them because they know my address details without my help