I've received several text messages from them. When I called to tell them to remove me from their list and that i do not want their services, they hung up on me.
Please report these text messages to your cell phone company. The fraud/security department at Verizon is already investigating them but these scammers use multiple numbers. Report as many as you can to your cell phone carrier.
If you call the toll free number you will be asked for credit card information to pay the "shipping and handling fee" on your free gift card. It is a scam