In order to keep records of purchases made and agreements entered into, logs or recordings may be kept for a longer period if you have purchased a product or service by phone. If a judicial or disciplinary action is initiated or contemplated, the personal data may be stored until the end of such action, including any potential periods for appeal, and will then be deleted or archived. When personal data is deleted, the data (including behaviour information) may be kept in an anonymised form that does not allow you to be identified. Your rights
You always have the following right:

Withdrawal of consent: If you have declared your consent for any personal data processing activities, you may withdraw this consent at any time with future effect. Such a withdrawal will not affect the lawfulness of the processing prior to the withdrawal of the consent or processing based on a different legal basis than consent.
Can I withdraw my consent if I do not want you to process my data anymore? 
If you have declared your consent for any personal data processing activities, you may withdraw this consent at any time with future effect