You can repeat that until you are blue in the face if you like. That won't make it a true. It is ludicrous to modify a business agreement without actually giving notice, and expect to keep the proceeds of that mistake.
If they no longer want to offer a free tier, they're free to end it. I don't think anyone is proposing otherwise. They are not, however, free to unilaterally move people to a tier that costs money and start charging them without an explicit agreement.
They've offered refunds on delivery charges and a full refund on the Instacart Express subscription fee for people who don't want to come along with them to their new pricing model.
Doesn't really matter. The fact that they charged without permission is seriously wrong, and I don't see them owning up to that. They seem to think their mistake was in not notifying people well enough.
