It is certainly fair to say that "bad" would mean they refused to offer a refund...but I don't know if I would decribe the experience as "exceptional".
If I had come on here instead and said "I bought $70 of yeast from WB and a bunch of it was expiring next month and they let me ship it back to them for a refund, that is just outstanding service and they went out of their way", I wouldn't expect a whole lot of agreement.
I think you're right! No one said it was outstanding, either. I'm just saying that was disappointing for you, but not "bad" enough to rally the troops into boycotting them. Most of us would shrug and either return the yeast for the refund, or keep it and use it without too much thought. You definitely have the right to be unhappy with the service, but I think WB did what they could to make it right.
If you're unhappy with them, of course you should shop elsewhere.