Bosch Home India — Faulty product delivered

Hi I bought a dishwasher SMS6ITI00I with HSN/SAC no. 84221100 from guwahati. But it had a crack in it and is leaking water through bottom tray and then started showing e31 error. In short, the delivered product was already a defected, rejected and faulty one.
I wrote them a mail regarding this. They said they would be looking into the matter. However, even after 5 days of my mail, I have received no update on the follow up.My follow up no. is [protected]