Awful experience! I’ve operated a trip through Aeromexico (skyteam member) Mexico-cancun in business. Not only did I get downgraded to economy without any explanation but my flight never got credited either (tickets bought via Air France). I raised a complaint right after my trip with all supporting docs and never received the needed support up until today! The customer service (that is now externalised from my understanding) asked me 3 TIMES to send them a copy of my boarding pass (which I did) and no action was taken. This was September 21 and only today have they finally credited my miles without any compensation. I do not recommend sky team anymore.
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