I don't think this thing is going to get popular. It'd only be used by people who:

• know it exists (so probably internet-savvy, highly literate English speakers)
• have a refund or cancellation/etc. to ask for
• ... that's either so low-value or inconvenient to them that they can't or won't ask for it themselves
• ... but important enough that they do bother using a service for it

And I am really glad of that, because otherwise this could mean the end of being able to get any decent customer support at all. It's already an ugly equilibrium between awful customers, and companies putting in the absolute minimum resources they can get away with.

If you give the customers a let-the-AI-go-bother-customer-support-for-me button, and they decide to use it, that does not mean that the customers win, it means the equilibrium is going to swing somewhere completely different.