You must inform the data subject about the actions deriving from their request within one month, which can be extended by another two months when it comes to particularly complex requests. This extension of the deadline must be notified within the first month. If you decide not to attend to the request, you must inform the data subject and give reasons for the refusal within the period of one month since the request was submitted and explain that they may submit a claim to the competent data protection authority, such as the APDCAT.