Prestige Smart Kitchen — wet grinder

I purchased wet grinder model no. Pwg01 on 17/6/17. Within 1 month we were not able to remove drum from base unit. Service person came for solving this issue 2 or 3 times. Once they said they will replace the grinder. Now when we are lifting drum from base unit, base unit is also coming up along with the drum and the screws are gone.

We are having bad experience with this product from the day we bought it.

Now service person are telling warranty is over and we need to purchase a new base unit.