The Data Protection Officer is a formally defined role within the GDPR. Search for that term + company, and you should find an address. Generally dpo@company.co

The Data Protection Officer is a formally defined role within the GDPR. Search for that term + company, and you should find an address. Generally dpo@company.com, or similar. The Data Accessibility modalities need to be defined in the Data Processing Agreement. So "dpa" or "data processing agreement" are also good search terms.