s7 up in smoke

Hello my mom recently gave me her samsung s7 as my phone had broken. This morning while i was busy with my usual day i heard my phone making a strange sizzling noise. I picked up the phone to see what the sound was. next thing i knew the phone was smoking an caught alight. I am so lucky that i threw the phone down and managed to get away in time. i am not sure how to proceed as i am too afraid to move the phone or even touch it. there is a terrible acid smell in the air. i never imagined something like this could ever happen to me please advise how i should proceed. the phone is just over 2years old. obviously i wont be able to receive calls as my phone is burnt to smithereens so if you could please email me that would be greatly appreciated