I understand the frustration, it is just a technical issue that right now isn’t something that can be changed/fixed.
Maybe use this as a test in reinforcing your ability to at times be a duck and let things roll off. Much like we have to do with people we must interact with at work or wherever in real life.
Or
take the person off ignore, send them a PM asking them to just please stop interacting with you at all in a calm manner.. hopefully that person will respect your wishes and just put them back on ignore.