How do I complain about a Spanish lawyer?

How do I complain about a Spanish lawyer?
General Council of Spanish Lawyers (Consejo General de la Abogacía Española)

By post: Consejo General de la Abogacía Española. Paseo Recoletos 13. 28004 Madrid. Spain.
By telephone: +34 915232593.
By e-mail:informacion@cgae.es.

General Council of Spanish Lawyers (Consejo General de la Abogacía Española)
  1. By post: Consejo General de la Abogacía Española. Paseo Recoletos 13. 28004 Madrid. Spain.
  2. By telephone: +34 915232593.
  3. By e-mail:informacion@cgae.es.