Vasanth & Co — I bought a mixer but performance was very bad, it's been a month still I didn't get the mixer and sales person reply was very bad

Address:

Seelanaickenpati,salem

I bought the mixer before a month in vasanth & co in opp. to new bus stand, salem. I said the requirement that we are family with 3members and we need the preeti mixer, but sales person convinced to buy butterfly mixer that it is opted for small family and it's performance is the best.
We trusted their words and bought the mixer but it's performance was really very bad, not grinding properly
We bought it back to Showroom and even took it to service centre but it was the same performance..
The mixer we bought was in Showroom for a month, we have used it for only a day. Still now it's in showroom they didn't saying anything to take it back.
Now the sales person is saying that, we will say anything to buy you, you should be careful before buying mixer. Once we sell we're not responsible for what you buying mixer.
Is this a reply from vasanth & co employee.?
We have trust in your company nd we came but now we regretting for buying it. Kindly contact me someone from your company. We still didn't have mixer that we paid, it's been a month. The mixer is still in showroom.