WHITEFISH BAY, Wis. (CBS 58) -- The Whitefish Bay Police Department says they've received several fraud complaints from people being contacted on their cell phones by a person claiming to be a representative of BMO Harris Bank.

The caller reports fraudulent activity on the customer's account and asks for their pass code and user ID. Police say in some cases, the caller has provided the customer's social security number and date of birth to make it appear more legitimate. 

If the customer provides their pass code and user ID, the caller fraudulently withdraws money from the account and makes changes to it without consent.

The police department says to never provide personal identifying information or bank account information over the phone. 

If you receive a call like this, hang up and contact your bank to verify your account is secure. Contact the Whitefish Bay Police Department to report any fraudulent activity on your account.