Real redress, in order

1. The controller, in writing

   Without waiting

   Write from the address that created the account. Name the ground for erasure you rely on, and ask in the same sentence for a copy of your data and the list of recipients. Keep the acknowledgement: that is what starts the one-month period for informing you of the action taken, plus two further months at most if the delay is announced to you with its reasons within the first month.

   Data protection and online privacy (Your Europe, European Union)

2. The data protection authority of your country

   After a month with no reply, or after a refusal

   The Regulation lets you choose between the Member State of your habitual residence, that of your place of work and that of the place of the alleged infringement. The official EU page states that the authority investigates the complaint and responds within three months. The European Data Protection Board publishes the list of all the national authorities, with their contact details.

   The national data protection authorities (European Data Protection Board)

3. The judicial remedy, without going through the authority

   At any time

   The official EU page states that you may take the matter straight to court, without first going through the national authority. The Regulation adds that proceedings may be brought before the courts of the Member State where you have your habitual residence, and not only where the controller is established. For a low-value cross-border claim, the European Regulation that sets up the small claims procedure states in black and white that representation by a lawyer or another legal professional is not mandatory there.

   Small claims (e-Justice portal, European Union)

Limitation periods and the rules of procedure before a national court are not covered here: this site presents only the European baseline common to the twenty-seven.