The Hawaiian Electric Company (HECO) is offering tips for people being targeted by scam calls.

Recently, customers reported receiving calls from HECO employees threatening to shut down their electricity if they don't pay over the phone.

The company says, if someone calls asking for credit card information, prepaid debit cards, or bitcoin -- it's a scam. If they ask to meet in person to pick up payment -- it's a scam.

HECO warns customers that scammers could even show up at your home or work.   

"Just make sure valid ID, never open you door, or let anyone into your home without first getting information, checking to see if the vehicle has the right markings," said HECO spokeswoman Shannon Tangonan.

HECO also says that if the caller sounds threatening, hang up and call customer service -- and always check for credentials.