Symphony Limited — Regarding to symphony air cooler water sensor not and water pump not working

I am buy symphony dit3d i30 air cooler on 22-april-2023 then cooler water sensor and water pump not working. so i call to service center on 22-april-2023 11:27am they told me your complaint is register and service provider come your home between 48 to 72 hours but its 4rth day person not come.
and they did not provide service as per they told. i called many times but not response. its so harassment. please do action on that my name is dhamapal gawai