Lenovo — lenovo p2 - phone screen broken by service centre

Address:	560035
Website:	Lenovo

Hi all,

I submitted my phone on 9th oct 2017.
There was sensor & finger print scanner issue on the phone.
They told i'll have to pay for screen replacement even though phone sensor stopped working by itself.
Anyway i agreed to pay.
Phone still under warranty (Purchased it on 17 jul 2017).

When i recently visited service center, they had broken the display.
I am following up with both service center & lenovo customer care online (Chat/calls)...
They have not responded positively.
Please help.