I basically had the error where i clicked no to the confirmation but the reroll happened nevertheless. I couldn't record it but here are the proofs of my pokemon before using the free reroll, so i have no reason to lie.
[spoiler=Before the reroll]
[spoiler=After the reroll]
Both, Mari & Homulilly are former names of my account. However, i'm sure that you can see my reroll logs to verify this.
Looking forward to your response.