Apple India — Warranty issue

Address: Udupi, Karnataka, 576105

I had bought an Apple Mac Pro in a computer shop and he gave me a bill also which is a genuine one but now Apple is telling that the warranty is expired and haven't updated and my lcd has a problem . While reaching Apple customer care no one responds clearly and resolve my issue . I have recorded all the conversations and I will wait for this month and if it doesn't get resolved I will be posting it on all the social media portals.
When ever I call up Apple care either their systems will be down and they don't have any answer and they tell will call back and no calls comes in. Case I'd with Apple :[protected]

Regards
Varun