I had a little fun with the last guild that spammed me like this. Told the person multiple times that I didn’t want to join, even put then on ignore. At that point I was getting an invite about every 5 seconds or so.
That spam really convinced me to join you know. I mean they must have really wanted a level 4 Rogue to their ranks. Yet, they didn’t like it when I macroed a dumb phrase to every one of my abilities that would be said only in guild. They kicked me out and it was a little disheartening 