Angry not proving the things that the DEFY need so that stove can be fixed

I just bought a flat from IGROW this year January and recently I have shortage with my stove. I report the matter to IGROW by logging a ticket and Tanya from IGROW send a warranty and advised me to contact DEFY about the matter. I did that and the consultant advise me that they need a purchase date and unit number. I sent IGROW an email advising that they need all those things but however they are not responding to my email. They are ignoring me