who is following u on alt accounts i didnt know about this

Fucking wildest shit. Some kid found out me and a mutual blocked them because they were making nsfw art of Silver, so they sent an ask to them on an alt account explaining that they were a minor and then proceed to use that to plead their case to me. It was really weird and we both blocked and they proceeded to. Use another alt account to harrass us in our inboxes and on our posts (on my post explicitly saying not to try getting around peoples blocks i CANNOT make this shit up) then they did that AGAIN and since then ive blocked like 15 different accounts attatched to them and scanning new followers to prevent them from harrass me again. Its a mess