Belleville Police said people claiming to be Ameren employees may be trying to take advantage of power customers.
Scam artists are posing as Ameren Illinois representatives and demanding immediate electric or natural gas payment or trying to obtain banking information to receive payment, according to the information on the Belleville Police Facebook page.
"The scam artists are very convincing," stated Richard J. Mark, Ameren Illinois president and chief executive officer. "Our policy is to always work with our customers to resolve any payment questions."
Ameren Illinois offered the following tips:
* Contact Ameren if you receive a suspicious call, especially if the caller demands an immediate payment, requests personal banking information or threatens to disconnect service. Hang up and call 800-755-5000.
* Ameren offers several methods to pay your bill, but impostors generally provide only one option with the intent of theft.
* Never give your personal or financial information to anyone who calls, sends an email or comes to your home unannounced.
* Remember, anyone who has the numbers on a pre-paid Visa card has access to the entire amount of funds on the card.
* Never wire money or provide debit, credit, Social Security, checking or savings account numbers to someone you do not know.