We never promised to return those Pokemon. We can only give punishment to the scammer.

And the problem about whether or not the Pokemon will be returned solely depends on the scammer action,

if the scammer do not return it then there will be a punishment for him/her.

Also, i recommend you to trade it with the people you really know or Staffs if you need trade evo.

And about the report don't forget to attach solid screenshot with detailed information as an evidence.

Thanks for the answers, that's all I needed to know.