Realme — No respone for Vaccum Robot Repair

My Realme Techlife Robot Vaccum Cleaner isn't working. It has only been 15 days since the purchase to the day it stopped working. I went to two service center's near my locality. They said "We don't have authorization to repair a vacccum cleaner so you need to call customer care and they will book a pick up appointment and take care of everything else." So I called customer care 4 times in 3 weeks. The only answer they were able to give is " We have raised your complaint, Our superior officers will take a look and call you as soon as possible." It's been around 30 days since the vaccum cleaner stopped working and 20 days since I contacted customer support. Still there isn't a response. Please respond and resolve my problem ASAP.