Eureka Forbes — Cheated with fake Water softener

Address:

Gud bazar, chandrawati ganj, Sanwer, Indore

I bought this water softener in 2021 from pure sales & service ujjain. Within just 4-5 months, it stopped working. I called the service manager multiple times to solve the issue. He finally came and repaired the softener and reinstalled it saying it's working now.
When I checked the water quality, I realised we are using hard water since so long, this softener is a fake product.
They did not even care to give us the right solution. I invested 45k for this. They costed for the softener salt as well, still not giving proper service. I am fed up of this eureka. What should I do now? Please get it resolved.