My Answer :

1. i will first cry cos i am a newbie and i know how many times i go mountain before i fit get 400 stem 😢😥..i will cry like when i lost my phone
2. I will go and tell @Ehiboss, @ogoowinner and my other uncles and aunts on steemit, if there's a way we can use juju to tell the person to return it or if something can be done
   Still crying 😥😢
3. I would pray cause i really do believe in miracles, i will mow move from crying to weeping because it is God I'm talking to 😥
4. I'd make a post about it 😒 and start following the account and monitoring it every minute, my steem cannot go like that.
5. I'd patiently wait to see if the money would refunded

But sincerely i wish someone can mistakenly send it to me and say don't worry keep it 😂😂
Thanks @ttopswag