Xiaomi India — Not getting my phone repaired

Website:

www.mi.com

I submitted my phone on 31aug 2015 and my work order no is Gcs/xm/15/00811, there is a motherboard issue and now it is more than a month still they don't give me a correct time that i get my phone back infact when i call to customer care they irritates me the same line they repeat again and again and they also not transfer my call to their senior. Plz plz help me.. .