Stanley Denies Warranty for Leaking Thermos, Questions Authenticity of Their Product

I bought a Stanley thermos from A101. The lid is damaged, and it leaks all over my bag. A101 informed me that my return period had expired. The thermos cost about 350 euros. When I contacted the Kutupayısı; Service Center, they mentioned that since I bought it from A101, it could be not original and, therefore, I dont have a warranty. But I remember, Stanley thermos used to have a warranty. The thermos has not even completed two years yet.