Saravana Stores — wet grinder

We bought butterfly wet grinder in chrompet saravana stores. They gave defect wet grinder. We contact butterfly company. We asked replacement. First they told ok, then they told cant.. Then we went to saravana store and told the problem. We asked we are not satisfied your product and response too. We want our money back. We return the grinder. But they didn't give our money 7185.