Thanks ivanbranco and SomeoneElse_Revert. Unfortunately, I think this user never reads the messages we leave him in the changesets because he creates fake accounts with new fictitious emails that he never checks. Therefore, the only way to try to communicate with him is by sending him a private message.

Since he contacted me privately months ago to insult me, state political reasons and threaten me with physical harm, I decided that I would not talk to him again or participate in debates in which he is present. It is a pity that, as well as debates within the community usually work, in this case it could not be resolved.
Thanks again.