Liberty Utilities is again warning customers about phone and email scams that appear to be getting more aggressive.

Someone posing as a representative of the company is reportedly calling customers and threatening to shut off their power if payment is not made.

In some cases, the caller has specific customer information such as the amount of the customer’s last payment. Liberty said it does not know how such information was obtained. Credit card or other financial information also is requested.

“We want our customers to be aware of these deceptive calls and emails so they can avoid possibly compromising their personal information or losing money,” Janine Irwin-Webb, senior manager of customer care, said in a news release Thursday.

“Please contact our business office if you ever have questions about your account or service.”

Liberty stresses that its representatives do not place phone calls or send emails to customers demanding payment. Customers who get such calls or emails are asked to call the company at 1-800-782-2506.