Customer Support Department

Our Customer Support Department is at your entire disposal to clarify any doubts related to KOATI.


Do you have a question? Send us an email at and we will get back to you as soon as possible


You can contact us with a call to+351 252 860 700 (call to the national fixed network). Opening hours are from 9 am to 6 pm, Monday to Friday (Lisbon time).

Electronic Complaint Book

You can submit your complaint in electronic format, through the digital platform with the same value as complaints presented in physical format.
We remind you not to provide your card details via email or social media.