Sunflame Enterprises — Sunflame mixie crystal

I bought mixie of brand sunflame on jan. But on March month itself it is not working . Then I raised complain on may. Customer executive gave customers center number. I called them they came and took my mixie jar and went. Nearly 50 days over till now I didnt get it back. I called and complained more than 20 times. Past two month inam putting call and raising complaints but till now my issue not resolved
I never seen such a worst customers service in my life. Sunflame big company and product was so good before. But now totally waste. How to get my product or money. Each money is very important for all human beings. Why cheating people like this. I want a proper response for this.