Centro de Investigaciones Sociológicas - CIS
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The CIS Service Charter describes the services provided by the organization, the rights of citizens who contact it, and the commitments assumed to achieve quality management. Through this Service Charter, citizens are able to understand the type of service they can receive and its quality commitments.

Users may submit complaints and suggestions regarding the services they are using and, in general, regarding the operation of the CIS:

In person:

In the form available in the Registry of the General Secretariat of the Center for Sociological Research, (Calle Montalbán, 8, 28014 Madrid, 3rd floor).

Electronically:

Through the electronic headquarters of the Center for Sociological Research.

By mail:

Addressed to the General Secretariat (Calle Montalbán, 8, 28014 Madrid).