Update 150226
Milk - More on setting payment day to 0 (zero). A tidy up has taken place which should improve matters. Also, if the total paid is NOT 0.00 and the payment day is set to zero then the screen turns red! Should this happen then kill the payment exit the PayView screen and then retry.
Milk - In the delivery screen added the menu Show Del No Cancel. It does not do quite what I wanted in still displaying the names of Customers who have cancelled items. It needs a bit more thought!