I received one of these calls as well. I was told to log on to vzw50.com Apparently, according to the customer service rep I talked with at *611, there are a number of different websites suggested for receiving your Verizon bonus money. They are all scams, obviously, and need to be reported to Verizon. If you receive a text message of this sort, forward it to 7726; if you receive an email of this sort, forward it to email@example.com; if you receive a phone message, call *611 and report it. There is a team of VZW tech people looking into this. I suggested that all Verizon customers need to be informed so that they are not vulnerable to the negative effects of responding to one of these phishing attempts.
If it sounds to good to be true, it usually is!