Prestige — wet grinder parts not available

we have purchased prestige wet grinder PWG 02 200 WATT through amazon on January 19, 2015(bill date) on opening the box and trying it for first time we found that machine is working but the container is not rotating hence we could not grind. We call customer care, he told motor is detached from its base so whole base is to be replaced as and when it will be available. More than one month elapsed but we could not use our grinder. After complaining to customer center vide complain no GUJA 894991 still we have not received any solution of our complain so please change my grinder.