Lava Mobiles — Mishandling mobile at service center during service

I have purchased LAVA A1 JOSH(2021) blue, silver mobile on[protected] attachment enclosed). Recently I had signal and battery down issue. i visited SRI SAI VENKATESWARA TECHNOLOGIES service center, ongole, praksam523001as customercare suggested And the desk guy directly said it is water damage issue. Also the service boy broken my mobile front panel., when I asked him he said what can i do and simply ignored the discussion. Is this the way to treat customers in this way?. My mobile has broken and no bolt was attached.. I believed in indian brand and also I too extended warranty as it is proud of indian brand. Very very dismanner way it is.. I wanna my mobile to be as it was before given to service boy. Else the consequences will be in higher level. Lava cutomercare also simply avoided and didnt lisen to my query and supporting service center. In Lava website its clearly mentioned 1year replacement guarantee.