Indian Army — Fraud Collection of money

Address:

Not sure, mentioned as International Airport Mumbai

Hi
Myself Purav was looking cycle for my kid and unfortunately i got n contact with online Indian Army business for the same, i reached out one online merchant on 29th April 21 from Indian Army store, the merchant addressed me as Sahil Kumar [protected], overall cost was informed as Rs5500, asked to deposit 750 as token for couriering the same on 30th April 21 before 10am.
Was assured that you shall receive tracking sheet and all which i got too to make it look authentic
I was assure that if you don't like it we shall refund as we are from Indian Army Store, today morning i got call from Courier from Indian Post Office [protected] saying that your tracking id has got expired and courier cant move unless this is shared, and for that to be enabled you shall need to pay Rs 2750/-
Post paying 2750 i was asked to pay Rs 2700 + Rs 50 in 2 parts and not together, i had then got a suspicion that its a fraud
i persuaded them to refund my money and where the person Sahil Kumar started talking in abusing language.
Its extremely shameful that in name of India's prestigious body name is used
pls help