<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by cataber:
Also worthy of note is that they will NOT credit your account retroactively with any additional mileage you would have earned at your next higher status level. I made Silver on a Monday and had three more flights that week that "did not qualify" for the bonus miles, since I did not "become" a Silver until that following Saturday. For me, it was only a difference of about 600 miles, but going from Silver to Gold, it could be a much bigger number, since Golds get 100% bonus mileage as opposed to 25% for Silvers.
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Although it doesn't really affect a person going from GM to PM (you both receive 100% matching miles), if you are an FO and reach GM before the Saturday update and have flights during that week it could make a big difference in Medallion matching mileage received (25% vs. 100%)
This happened to me and I called up SMS, asked for a supervisor and after a arguing my case, she gave me "goodwill miles" to make up for the amount that I didn't receive.
Don't be afraid to make that call if you are entitled to miles and because of DL's Saturday update situation you don't receive them. Make sure that you get a supervisor if the agent doesn't rule in your favor.