Some Verizon (NYSE:VZ) customers may have a welcome surprise waiting in their mailboxes this week in the form of a partial refund as part of the $100 million Verizon Class-Action lawsuit settlement. Indeed, the wireless network operator has recently begun notifying customers via postcard or email that they have until April 15 to file a claim entitling them to up to$100.What do you need to know about the latest class-action news making rounds on Wall Street?Well, the lawsuit accuses Verizon of levying fees ...