All TU students are asked to visit the E-service website (https://e-service.tudelft.nl) to check whether their pesonal information is correct and to indicate if their personal information my be passed on to third parties. Did you already do this?
E-service is an electronic helpdesk for TU Delft students, where they can view their personal information and in some cases modify it. At present, this service is only available to students. E-service manages personal information such as address data as well as enrolment information.
It is also possible to indicate whether certain data may be published or passed on to third parties.
E-service replaces the functionality that students were previously offered with the NetID application. E-service is a web application and is thus accessible with a web browser, at https://e-service.tudelft.nl.
(From: TU Delft website)