Who should i send message

I’m getting harrassed by privious guild and they are following me and guild i join. when i join a guild they send message to them by dont invite me.

WHAT AND HOW CAN I DEAL WITH THIS IT IS GETTING ANNOYING.

I HAVE created a ticket but there has to be a way to have them stop or should i just stop playing the game for good. I dont want to talk to them or deal with that old guild but it is getting annoying how much rumors thay are spredding.