bills due 

when you have to give back

The coach said bills due because the city paid for the turf.

bills due by bills due November 19, 2018

Due Bill 

A hand written note that is returned from a Food Stamp purchase

a $10 book of food stamps
a $ 8 purchase
= Priceless ... just kidding

A $2 due bill
(a note written on the back of the receipt signed by Mr Charlie to be used upon your return towards your next purchase)

Due Bill by Peter Jeter October 13, 2005