Pigeon Appliances / Stovekraft — Pigeon Cooker bottom aluminium attachment cameoff

I have brought pigeon cooker one year back.few days back, .bottom aluminium attachment is completely came off .am trying to claim for warranty.

no response in toll free number[protected].)
no response for email sent ([protected]@stovekraft.com.)
no response for calls. (+91-[protected].)

Please let me know how can we claim for warranty.