Bosch Home India — Very poor service

My Bosch Dishwasher SMS6HVI00I purchased in September 2021, had control board burn out in 2nd week of November 2021. Subsequently Bosch franchise (I believe) Isotech Electronic Corporation technician visited and concluded that main control board is burned out. Being under warranty, they ordered replacement part FOC. The technician told me that part is supposed to come from Germany. Till date (13 Jan 2022) the replacement part is not received and the machine since November 2021 is sitting dead at home. There was no communication from Bosch giving estimation of time it will take to resolve. Some Bosch representative keeps calling me and asking if my complaint has been resolved or not. Very poor service.