Intex Mobiles — intex mobile model stari10, invoice no:s888d4/18/12618, dated:04.06.2018

I purchase intex mobile model stari10, on 04.06.2018, it not functioning form 15.11.2018, i given for servicing in a authorized service center on 31.12.2018, job sheet no:[protected]t001, till date the phone not returned to me. The service center people telling that, the phone was sent to factory head office for repair. Intex customer care people not responding. I am not able to trace the status of my phone.