AJ...send them a private note highlighting where you are tagged and say, "Kindly remove me please and thank you!" or something to that effect - I promise, they will not be offended.
If they do, it means you found a writer who doesn't respect your boundaries and I hope that means it will be easier for you to ignore them. But I truly doubt anyone would take it badly.
It only would take one "report as spam" to Medium and they could be banned - so writers have to be respectful, at least it's the smart thing to do if they want to stay on the platform.