I just did the steps described in[0] to convert back to the "Classic" plan. Microsoft says my plan will renew in May for $99, but I'm not getting the $15 of the $30 I was forced into paying in May back. I've never used any of the Copilot "features". I'd rather have my renewal discounted by $15 to $30.
As I said in another comment: We need a US class action. It will only enrich the lawyers but it might serve as some type of deterrent to Microsoft. Maybe. Probably not.