Our local DPA, who will then proceed to ignore it for years or tell us to take them to court ourselves. [0] As European privacy law including GDPR is a symbolic tool meant to placate and selectively enforce when politically expedient, not to seriously enforce. Understandable, given that near all EU politicians work for corporate interests, as in the US.
[0] https://noyb.eu/en/project/dpa/dpc-ireland - 80% of complaints pending a reply for more than 1.5 years