We do not provide a 'PCI certificate of compliance' as this does not confirm whether a merchant is PCI compliant as per PCI DSS rules. It is the responsibility of the merchant acquirer / payment processor to determine a merchant's PCI compliance based on the executive and vulnerability reports, attestation of compliance documents (these three documents are contained in a report pack), and your SAQ (Self Assessment Questionnaire).

Related:

How to download a Report Pack from HackerGuardian

How to fill out a SAQ via HackerGuardian