Officials from Ameren Illinois are warning customers of a scam in the Effingham area. Ameren says that businesses have been receiving calls from someone who claims to be with Ameren Illinois. The caller demands immediate payment with a Green Dot Money Pak card (pre-paid card), threatening to disconnect the business’ utilities if payment is not made. These calls are a scam, and in no way associated with Ameren. If you receive a call demanding payment you are advised to hang up and call Ameren at 800-755-5000. Ameren suggests contacting local police as well if you receive a scam call.