MidAmerican Energy is warning customers about scam artists posing as MidAmerican associates or attornies calling customers in Iowa. Spokeswoman Tina Potthoff says that in most cases, the scam artist will tell the customer their account is past due and payment is needed immediately to avoid disconnection. They’ll then ask for credit card information. Potthoff says not to give any personal information to suspicious callers. Instead, end the conversation and contact MidAmerican at 888-427-5632 to confirm whether the call was from a call center or a scam artist. Potthoff also says to call your local law enforcement officers immediately to inform them of any suspicious calls.