Goodwill Industries complaint: Cash not accepted?

Today I went into Goodwill (Green Valley) I approached the cashier to check out- (4:47pm).
I had an extremely negative experience trying to pay with cash. The total amount due was $48.75. I handed the cashier $100. Dollar bill. She said that she would NOT be able to accept the $100 bill because she had just started her shift and only had a $100 till- The cashier proceeded to ask if I could pay with a card, I told her I could not. The (exuberant) cashier on register 2 (who was at the end of her shift was ready to clock- out) but said she could give change for a $100 bill, but then said she was not able to open her register unless someone else in the line was paying with cash.
A lady (waiting in line) chirped in she was paying with cash- but then the initial cashier said she did not want to “get fired”
For exchanging the $100 bill for 5 $20. They then radio’d the Manager (Eunice) to get change- she seemed to be put off by having to make the exchange then ALSO demanded I put it on a credit or debit card- I told her I wanted to pay with the cash I had on hand, the manager (Eunice) then said she was going to cancel my selections- I said to the manager, “you mean you’re willing to cancel my bill for $48.78 because you don’t want to get change ($59.22)??

She then huffed over to register 2 in an angry mode and began checking my order out on register 2. She asked for my ID to prove I was over 50 (I am obviously over 50, and was not asked initially) it felt like Eunice was angry that she had to make things right. Isn’t that what she is hired to do? Eunice needs management training.
FYI- I donate $100’s of dollars of merchandise to Goodwill-because it helps
People find employment-but will stop all donations because paying with cash only causes a “manager” to do her job.