You can cancel your participation in Direct Pay <a href="https://www2.ameren.com/prot/common/DirectPay" target="_blank">online</a>, or you can print the Direct Pay <a href="/sites/aiu/csc/Documents/AmerenDirectPayForm.pdf" target="_blank">PDF form</a> then mail or fax the form with your changes to Ameren Illinois.<br>
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Changes to your enrollment status may take three (3) business days to process.