I am writing to raise a formal complaint regarding the unresolved issue with the machines. Yesterday, an engineer replaced 6 machines and assured us that everything would be in working order. However, after 24 hours, a new issue has emerged—2 out of the 6 machines are not working.
This situation is causing disruptions, and we expect the matter to be addressed promptly. Please escalate this issue to ensure a swift resolution.
Thank you for your immediate attention.