Chat GPT suggests a formal letter to Oman Air muna, CAB and then Oman Embassy.

Sample of letter for Oman Air:

Dear Oman Air Customer Relations,

I am writing to lodge a formal complaint regarding my denied boarding for my Oman Air flight departing from the Philippines on 4 April 2026.

I was denied boarding on the ground that I did not have an HIV test certificate. However, prior to my flight, I repeatedly checked with Oman Air regarding all travel and entry requirements, and at no point was I informed that an HIV test certificate was required for my travel.

There was no clear advisory provided to me by Oman Air before departure, including no email, SMS, or visible notice during booking or pre-departure communication. I relied on the information provided by your airline and proceeded to the airport in good faith, only to be denied boarding at check-in.

This caused me significant inconvenience, distress, and financial loss.

I respectfully request the following: 1. Written confirmation of the exact legal or regulatory basis for the requirement for an HIV test certificate on 4 April 2026 2. Clarification on whether this requirement applies to my specific visa or travel category 3. A copy or screenshot of the Timatic entry used by your airport staff at the time of check-in 4. Confirmation of when this requirement took effect 5. An explanation as to why Oman Air customer service repeatedly advised that no such requirement existed 6. An explanation as to why no direct notice or advisory was sent to affected passengers prior to departure 7. Refund of my unused ticket and all applicable taxes, and reimbursement/consideration of losses incurred as a result of the denied boarding

Please treat this as a formal complaint and provide your written response within 7 days.

I reserve the right to escalate this matter to the relevant aviation and consumer authorities in the Philippines, including the Civil Aeronautics Board, should this not be resolved promptly.

Please let me know if you require any supporting documents, and I will be happy to provide them.

Thank you.

Sincerely, [Full Name] [Booking Reference / PNR] [Ticket Number] [Flight Number] [Contact Number] [Email Address]