Legal Information and Claims

Registration in the Bank of Spain
Registration in the Bank of Spain
Corporate Governance and Remuneration Policy
Complaints and Customer Service

ZINIA is a registered trademark of OPEN BANK S.A., a bank registered in the Registro de Bancos y Banqueros [Banks and Bankers Register] of the Bank of Spain (Trade Registry of Madrid, page 202, volume 5308, sheet M-87030)

  • Registered office: Plaza de Santa Bárbara 2, 28004 Madrid (Spanien)
  • Telephone: +49 (0) 69 945 189 175
  • Fax: +34 913 421 050
  • Email:
  • Trade name: Openbank
  • Tax ID: A-28021079
  • Name: OPEN BANK S.A.
  • Bank code: 0073

In its activity, Openbank is supervised, among others, by the following institutions:

  • European Central Bank and Bank of Spain.
  • National Securities Market Commission (CNMV).
  • PriceWaterhouseCoopers, S.L. (external audit).
  • Banco Santander, S.A. (internal audit).
  • National tax authorities.
  • National Social Security Institute (INSS).
  • OPEN BANK, S.A. is a Member Bank of the Deposit Guarantee Fund for Credit Institutions.

Shareholder structure

Name of shareholderNo. of sharesPercentage
Banco Santander, S.A.172,782,81899.9994212 %
Cántabro Catalana de
Inversiones, SA.


Would you like to get in touch with Zinia?

You can reach our Customer Service through the following channels:

  • By phone on: +49 216 1621 0029, Monday to Friday from 9 a.m. to 5 p.m.
  • By email at:

Zinia undertakes to notify you of the status of your request within 48 hours.

Complaint Service and Customer Service

If the response you received from our Customer Service does not meet your expectations, you can contact Openbank’s Complaints Service and Customer Service. These are the contact details:

Grupo Santander Claims and Customer Care Service.

Apartado de Correos 35.250

28080 – Madrid


Fax: 91 759 48 36

Phone: +34 91 276 21 54 or +34 900 22 32 42


Office of the Ombudsman for Customers

The Office of the Ombudsman for Customers is an independent body with which the Santander Group is affiliated and to which you can submit your complaints. These are the contact details:

Mr. José Luis Gómez-Dégano and Ceballos-Zuñiga

Apartado de Correos 14019

28080 Madrid

Fax: +34 91 429 23 19


Claims Service of the Spanish Central Bank

If the complaint has been received by the Complaints Service and Customer Service but has not been resolved to your satisfaction, or if it has been over a month since the complaint was received and you have not received a response, you may contact the Spanish Central Bank (Banco de España). These are the contact details:

Claims Service of Bank of Spain

Calle Alcalá 48, 28014 Madrid

You can visit their website here.


Prior to using the Spanish Central Bank Complaint Service, you are required by regulation to demonstrate that you have previously contacted the Openbank Complaint Service and Customer Service or the Office of the Ombudsman for clients who have acted with full autonomy regarding the principles and policies in the performance of their duties.


Standard Complaint Form

The complaints form can be found in the Openbank branches:


Paseo de la Castellana, 134, 28046 – Madrid

Plaza de Santa Bárbara, 2, 28004 – Madrid

Telephone number for incidents: +34 900 22 32 42

You can also download the standard form for wording customer complaints and claims at the following link:

In accordance with the provisions of Regulation (EU) No 524/2013 of the European Parliament and of the Council of 21 May 2013 on the online resolution of consumer disputes, a link provided by the European Commission to the platform for the online resolution of consumer disputes by the customers can be used to resolve any discrepancies or disputes regarding services rendered online: