Although this scam is presently being reported in Illinois involving phony employees of Commonwealth Edison, the scam is one that is common throughout the country. The way it works is a scammer impersonating a utility worker calls saying that the billing system is changing and they need your credit card information. Another form of the scam occurs when the scammer, dressed as a utility worker comes right to your home and asks for payments necessary to fix your meter. If you refuse, they say your power will be shut off.
Never give your credit information to someone you have not called on the phone and are not totally sure is legitimate. Utility companies will never request on the spot payment after unannounced visits to your home. If you ever are even the slightest bit tempted to provide information, just call the company on a telephone number that you know is accurate.