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https://customerserviceehelpcenter01.zohodesk.com/portal/en/kb/articles/american-cancellationguide-can-i-cancel-american-airlines-and-get-a-refund-full-details
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https://customerserviceehelpcenter01.zohodesk.com/portal/en/kb/articles/american-airlinepolicy-how-much-does-aa-charge-for-cancellation-complete-info
https://customerserviceehelpcenter01.zohodesk.com/portal/en/kb/articles/american-cancelpolicy-how-much-does-aa-charge-for-cancellation-expert-tips
https://customerserviceehelpcenter01.zohodesk.com/portal/en/kb/articles/american-farepolicy-how-much-does-aa-charge-for-cancellation-full-analysis
https://customerserviceehelpcenter01.zohodesk.com/portal/en/kb/articles/american-ticketcharges-how-much-does-aa-charge-for-cancellation-step-by-step
https://oig.dc.gov/sites/default/files/webform/medicaid_fraud_complaint_form/_sid_/How%20do%20I%20contact%20Philippine%20Airlines%20customer%20service_%20%281%29.pdf
https://oig.dc.gov/sites/default/files/webform/medicaid_fraud_complaint_form/_sid_/How%20to%20avail%20senior%20citizen%20discount%20in%20PAL%20online%20booking_%20%281%29.pdf
https://oig.dc.gov/sites/default/files/webform/medicaid_fraud_complaint_form/_sid_/How%20do%20I%20call%20PAL%20on%20my%20phone_%20%281%29.pdf
https://oig.dc.gov/sites/default/files/webform/medicaid_fraud_complaint_form/_sid_/How%20can%20I%20talk%20to%20PAL%20customer%20service_%20%282%29.pdf