According to several reports, Verizon Wireless will be issuing refunds to over 15 million customers for "incorrectly charged data sessions." You can read about it here on CNN.
Don't expect too much money:
Current customers will receive notification of credits on their October or November bill of between $2 and $6 in most cases, while former customers can expect to receive a refund check in the mail. Some will receive larger credits or refunds.