Apple India — false report from service centre for not repairing the product under warranty.

Address: 741402

I have purchased apple i phone 6 online thru paytm a year ago. The warranty expires on 2nd may 2018. On 28th april 2018 while charging the phone it suddenly get heated and the no display could be seen. On 30th april 2018 i produced the phone to apple service centre at systematix media. City centre, kolkata. They further informed by phone that the product has been sent to bangalore service centre for further diagnosis. But after a week they informed me by phone that the phone has been unauthorized tampered so no warranty or any solution can be done. So they informed me to take back the phone. I have used single handed and no such unauthorized tampering was done but the service centre is giving wrong information so the warranty claim can't be done. I am thing of legal issues regarding this. And also i will inform all my friends and relatives not to purchase any apple product as they are giving false commitment.