A warning from AG Steve Six to check your phone bills closely.

He says unauthorized charges are appearing on some monthly phone bills.

They're often listed as enhanced services, billed on behalf of another company that specializes in voice mail or e-mail services.

Six's office says it has received more than 100 complaints in the past year and is investigating.

If you see such a charge, contact the consumer protection division at 1-800-432-2310.