Giving Tuesday

Today was Giving Tuesday and I did make a charitable donation. Of course it was a check I had already written to a charity I give to fairly regularly, but I mailed it today so that should count, right?  I was interested to hear the warnings on TV about avoiding scams and had a little scare along those lines.  I had recently charged an upcoming trip on my credit card. I want the points and will pay it off this month but I was surprised to see an email purporting to be from my credit card company telling me that I had charged too much and should make an immediate payment of $1,700.  Or I could call a phone number provided if I had any questions. I checked the number against the customer service number on my card and they were not the same.  After checking on line to see what my current ballance actually was, I called the number on my card and talked with a very nice real person named Melissa. She checked my account, agreed with me on the actual current balance, and said it looked like the charge for the trip had been run through twice. She got it straightened out and it's all OK now but I'm still wondering what happened. I've worked with the same travel agency many times with never a problem. It probably was an honest error, but who knows?  At least it's good to know I can still talk with a real live person when there's a problem. Thanks for your help, Melisssa..