Yeah, it does! If I buy a burger for a set price from you, and you give it to me, I'm in debit to you for the price of the burger. They legally can not stop accepting cash for debits. If you want to pay them in pennies, then they legally have to take it.
Only if it is a debt. Ordering a burger, for example, does not represent a debt.
Sure it does. The burger is made before you pay, therefore you have an obligation to pay the debt you accrued.
Yeah, it does! If I buy a burger for a set price from you, and you give it to me, I'm in debit to you for the price of the burger. They legally can not stop accepting cash for debits. If you want to pay them in pennies, then they legally have to take it.