AdamMiltonBarker GDPR gives you the right to have us delete your personal information (email, phone numbers, etc.) it does not include post you make publicly (at least from my understanding and a quick google search to confirm) or basically in the words of this:
An EU resident can request an organization to delete their personal data if the data is no longer relevant to its original purpose or if the resident wishes to withdrawn their consent to allow the organization to process their data. The right extends to possible third-parties to the organization that might be in possession of the personal data.