What’s in question here is where and how often they are advertising. Regardless of what the guild supports/stands for/etc, advertising for a guild is still subject to posting the advertisements in the correct place and not spamming the ad.
You cannot post these in LFG chat, and while this is a bit murkier, I would advise against doing it in Trade chat. There is a guild recruitment channel for these, plus the Guild Finder interface. It’s also subject to spamming rules, so I wouldn’t advertise for it more than once every half hour or hour. Most players have guilds, and those who don’t aren’t going to join if you spam it constantly.
Post the ad, then move on with gaming for a while. It doesn’t do any good to post every 30 seconds, because you’re only going to get it seen by the same people as the last time, and it’s going to annoy them.
Report them, place them on Ignore, and DO. NOT. RESPOND. IN. ANY. WAY.
For example:
This is a chat violation. There is no profanity allowed, especially masked profanity.
What someone else is saying does not absolve you from following the rules. Report them and move on.
A thorough invetigation doesn’t take long when it’s a chat violation. Did you break the rules, yes or no? Yep, you did, so the investigation is done.
You can file an appeal until they tell you the decision is final, but based on what you posted, this isn’t likely to be overturned at all. Rules were broken, and these are the consequences.
It doesn’t matter how long it takes or doesn’t take. They broke the rules, so they were punished in accordance with the Terms of Use.
If you mean the 10 days, it’s based on the history of the account. First violation is a silence, then a suspension. This would likely be the their violation, so that’s what informs the length of the suspension.
It continues to get bigger and will land at a permanent ban if changes are not made.