If you have an American Express card, check your Offers on the website to see if you were targeted for $10 credit for paying your cell phone bill of $75 or more online for AT&T, Sprint, T-Mobile, US Cellular, or Verizon. To emphasize, payments must be made online and can’t be made via phone or at the retail location.
You must sign up by 4/4/15 and you must make your payment by 7/15/15. The T&Cs say that you can get this statement credit up to 3x per American Express Account. So I’m not exactly sure if this means per card or per account.
Also it looks like Amex updated their website and the Offers section looks different. Honestly I don’t really like the change because you see less offers at once but oh well.
Adding offers to your card is still easy and you can still do the multi-browser trick to add the same offer to multiple cards if they were targeted on your various cards.