You have the right to restrict the processing of your data in accordance with Art. 18 GDPR, provided that (1) the processing is unlawful and you oppose the erasure of the personal data, and instead request the restriction of their use, (2) the person responsible for the data no longer needs it, but you need it for the establishment, exercise or defence of legal claims, or (3) you have objected to processing in accordance with Art. 21 GDPR.