Gionee Communication Equipment — about phone display

Address:

Kavali, Sri Amarajeevi Potti Sri Ramulu Nellore, Andhra Pradesh, 524201

My name is Santha Raju from Kavali.
I am using GIONEE A1 mobile . recently my mobile display was broken then I went to Gionee service center on 16th sep2019 the location is Nellore. In that office that guy told me 5000/- for mobile display. And I agreed, after completion I paid 5000/- and I asked bill for 5000/- and he said we will charge extra amount for bill and I asked to him is it recorded in your service or not he said not. and I asked to him it is Original display or not and he said it's original but it will not work like original.
My email Id:[protected]@gmail.com
Phone :[protected]