Well once I too chose a fc tag that another fc was useing before so I changed my tag that I have yet to see. The main issue with the company tag thing is 5 charactors max so if on a huge server with many people... well I'm sure there will be many people with same or really simmilar tags...

Still its not something to cry over and all lol just accept it and carry on, but like you say some people are super immature like that and make simply enjoying things not so enjoyable...

fact is there are many many players and fcs on all worlds and with limit sometimes silly stuff like same tag will happen its unadvoidable but still accept and move on dont troll or just change your tag afterall its super easy to do.