Bad service of santha table top 2litre grinder 110V

I bought a santha tabletop grinder from india, they failed to assemble properly so, i can't use it.So i have asked to resend the piece to my address. but they called me in phone and said they can't resolve the problem .He talk to me very rude in a bad manner.
I am talking to them since i bought that grinder but no use.