Please Help: KTM denying crankshaft warranty claim despite 7 services

I bought KTM390 2 years ago from my hard earned money ~12,000 km. Bike stopped starting, took it to KTM service, and after 3 weeks they said the crankshaft has failed.

When I asked about warranty, first they said it's covered under extended warranty (2yr standard + extension). Now they're denying the claim saying I haven't done my services regularly. but I've done 7 services in 2 years, all at authorized KTM centers. I feel like I am getting spammed by the service center.