Royal Enfield — Front Master Cylinder Failure after 2500 km and white in year

Address:

Aravinduja royal enfield, Kattupakkam,Chennai

I did service[protected] with KM of 11526 and service engineer informed me to change the Front Master Cylinder complete kit and it done. Last Service did was Oct 30th 2020 and raised the complaint but no solution.
But after 1year time with additional of 2500km again the Front Master cylinder got failed and when i approach service station i received that its already warranty expired.( allowed warranty was 6 months)
Whole Globe was in lockdown for 6 months from march to August 2020.
My Question is the Master Cylinder Life time is about 2500Kms but the initial one went up to 11000km.
I concern could be defective product was fit into my Vehicle.
I am not getting proper response from Aravinduja royal enfield Service engineer Kattupakkam, Chennai.
The way approach also not appreciable