The reason it pisses me off so much is I have used them like, 3+ times a week for 2 years, and every time I felt good about tipping which of course now feels... well, not good.

If they refuse, you could probably take them to small claims court for fraud, depending on the total value and how much you care. Though you'll have to do your own research on how to prove fraud in court or hire a lawyer...

If you go to support and search for how to cancel your account, they tell you to file a support request asking for your account to be closed. So you did the right thing.

I wish I had thought to ask for a refund of tips too, but I already sent my support request.