I don't believe we have someone on this Wiki by that name. If they insulted you on another Wiki, I would suggest asking an admin over there. If it did indeed happen on this wiki, please link to where it happened or provide a screenshot.
Okay, I've sent a message to MKBjunior 99 telling them to fix their behaviour and I shall do the same to Crossover2. I will not block them this time, but if they repeat their actions please inform me. I apologise that this has happened and will make sure to monitor the forums closely.