Amex Prepaid Card Complaint

Amex Prepaid card department,

ID prepaid card Unauthorized transactions/trans. issues North Carolina

I would like to document a complaint against the American Express Serve -. On - -, 2015, I used the new bill pay service to pay my car note via their website at americanexpressserve.com. I then contacted the Customer Service just prior to completed the bill pay. After I clicked the submit the Representative - ( name unknown ) then told me the payment would not be mailed out as a check. The reason this is an issue for me is I was previously told by Representative - ( name unknown ) the payments sent through the American Express Serve bill pay process would be sent out as a check. My lien holder for my automobile does not accept American Express. However, my lien holder does accept checks. I need to have this processed in a way which will be received by my lien holder, or I need to know what happens to my money. I have the receipt which I can send to whomever needs it.