Crompton Greaves / Cgglobal.com — Received wrong item

Address:

Kolkata, West Bengal

I have ordered on last 31-may-2017 one 20hp (940rpm) Crompton Greaves motor from a sub dealer named Rajesh Gupta, Kolkata. As per shopkeeper I have to pay the amount first so that he can send me the product through transport system & I paid Rs31100.But when I received the motor it was 20hp(1460rpm).Then I asked him to exchange it.But he is now not ready to exchange because I don't have the prove for previous order confomation. & also saying that bill is made so he cant exchange it. Regarding this I have spoken to Company help line no & they gave me a no of Kolkata Sales Excutive no to speak with & named Mr Ayan Chaterjee. When I spoke with him he told me sell that motor by myself to someone else & again buy what I want. Please tell me here how this is possible for me ? I belongs to a village area & how many people are using this kind of high power motor.