Fake phone calls

I received a phone call from +919069457859. He said he was calling from myntra.com. He asked me “mam, you have purchased metro women heels from our company on 19th sept?” I said “yes”. He said ” Congratulation mam, you have been selected for some prizes “fridge/otg/cash prize”. I though as his information was correct, so I showed interest on him. He said “to receive your prize you have to purchase anything of amount 3500”. I told “Ok”. He told me that another guy, his senior, will authenticate the transaction. So, another guy called me from “+918506953203”. He said to share my details. I shared my details and my account was debited by Rs. 17800. I don’t know how they hacked my myntra account and they receive all the information about me. Hope, some steps will be taken against the fraud callers.

Thank you