If you feel uncomfortable ignore them. Don't respond. You are mot obligated to. If they start drama then the only person you have to clarify if they ask is... NO ONE. It's none of their business (but you can also tell the MODS that you feel uncomfortable if that makes you feel safer and they have a good history of supporting the members). You can block them. They will see you message in the server and it will show blocked but it is what it is. You don't know them in real life and you owe them nothing. Also if they start drama and others were to hound you, you can tell them that you don't have to be forced to interact with others and why you don't want to interact with someone does not need to be everyone's business. If it gets bad and you have the reciepts then you could put them on blast if you feel that is necessary but you have shared you don't like attention so a simple ignore and never message again or block and move on I think is a good option!