Mediv cast spells while in raven form

I was played at mediv on ARAM match, and on 14-42 time match i notice that i can cast spells freely.After match dude with nick- GetAvayBlizz start call me cheater at direact and type bad words about me,my low rank and etc. and it deeply upsets me(. and no i have no clue what lead to all of this(free spells and badmoth at me)
https://drive.google.com/file/d/1q0VgkOdOntcyAFUcZUOr10bDgYOq6Mq_/view?usp=sharing