Activation De Blade Par Telephone Can You Use De-spell To Negate The Activation Of Monster Reborn?

Can you use de-spell to negate the activation of monster reborn? - activation de blade par telephone

I played with my ex-girlfriend, as a monster is to bring your Blue Eyes White Dragon. If not, leave all showdown magic? It was because of my charm comes from the card or it is to stop the activation of the security card? Please explain if the time to de-activate right spell.