Bajaj Auto — Dual channel ABS not working

From the 2nd day of purchase pulsar N250 ABS not working after taking speed 40km/h. I told many times at service center which is located at B L Saha road they working on it but till the problem not resolved.I have shown this problem to the service center three times and I have to take leave from office when I go to the service center, this is very problematic for me. My office is on the Highway and this kind of problem is very risky for me.