Brussels Airlines downgraded my paid seats without refund — how can I get a proper refund?

If Brussels Airlines downgraded your paid seats without a refund and you want to get a proper refund;

Contact Brussels Airlines support/Customer Relations with a clear escalation;

• State that you paid for specific seats (extra legroom/premium/etc.) but were assigned downgraded seats without compensation
• Provide your booking reference (PNR), flight number/date, original seat numbers paid for, and the seats you were actually given
• Attach receipts or screenshots showing the paid seat selection and the downgraded seat assignment
• Include photos of your boarding pass if it shows the downgraded seats

Ask them to;

• Confirm that you were involuntarily downgraded from the seat(s) you paid for
• Explain why the downgrade happened (aircraft change, overbooking, misassignment)
• Refund the seat-selection fee you paid (or provide an equivalent voucher/credit)
• Provide written confirmation of the refund amount and timeline

Include these points to strengthen your claim;

• Paid seat selection is a paid service/ancillary, not guaranteed unless confirmed — a downgrade without compensation is not standard practice
• If the downgrade was due to an aircraft change or operational reason, airlines typically must refund the difference for the decreased service level

If the problem remains unresolved after contacting support, consider filing a complaint on Xolvie to raise awareness and pursue a resolution.