WICHITA, Kan. -

A scam targeting Westar Energy customers continues to cost victims hundreds of dollars.

The utility company reports several business owners have been contacted by fraudulent callers claiming to be Westar Energy employees. The caller asks for a pre-paid debit card or pre-paid Green Dot card to avoid disconnection of service.

Gina Penzing, director of corporate communications, said the scammers are becoming more sophisticated.

"They may use the name of a local employee and provide what seems like a valid employee number," she said. "Customers may always request to call us back." 

If a customer receives a call that is suspicious, he or she should hang up and call the Westar Energy Customer Relations Center at 1-800-383-1183.

Westar will never ask for a customer to purchase a pre-paid card to avoid disconnection of service.