You'll get readded to brokers' DBs. “How can you not, if they aren't tracking you they don't know that new entry is one they shouldn't be tracking!” being one excuse.

Also, new brokers turn up regularly, or often the same broker under sufficiently colours that they can weasel their way to not being recognised instantly. Your removal service requested removal of your info from AnonData Inc, but not DataAnon Ltd. No, despite employing exactly the same directors & managers, and being officially registered from the same collection of PO boxes, they aren't the same company, honest… Shady shit doesn't just stop because you ask once.

Maybe they set a do not store flag for your info, because your data keeps coming in from their partners, even after you requested deletion. So to keep filtering for you and deleting, you need to pay their protection fee.