Xiaomi India — behavior of staff

Address:

lal darwaja fatehgarh, fatehgarh farrukhabad, bus stand, Farrukhabad, Uttar Pradesh, 209625

I purchased mi note 5 pro few last month nd yesterday i check my phones volume button properly not working, nd today m going to service centre his name ws (Chaudhary enterprises farrukhabad uttar pradesh) his staff not talked with me in clear way they r thinking customer ws mad, i told my problem nd he said its not claim in warranty, nd told me about lots of charges... I humble request to u solt out my problem...