Upon checking out of Rio on June 8th, they made me pay tax. I could use RCs for the tax, but they said the tax had to be paid in some way -- either RCs or with normal money.

This INCORRECT because I paid for the entire stay with RCs.

However, they all insisted I was wrong, and I had no way to check out without paying the tax with my RCs, so I did so and figured I'd fight it later.

They did acknowledge that they weren't 100% sure that I really owed tax, but that the system was demanding the tax get paid, so that was the only way I could complete checkout.

I was told that "accounting" would call me on June 11, but of course that didn't happen.

I think I know what happened, but nobody at Caesars/Rio seems competent enough to fix it.

Basically, the only way you can book a room with RCs is to first book it as a regular reservation, and then change it at the end of the stay to pay with RCs.

Unfortunately, this triggers a room tax, since the system doesn't know when you book it that you're going to use internal RC points, so it charges you tax. Then, when checkout time comes, the system expects the tax to be satisfied.

If you could make a "Rewards Credit Booking" in the first place, you wouldn't be charged tax. But there's no way to do that -- or at least I don't think there is. (If you know how, tell me!)

I spoke to some obnoxious woman in the billing department today who came up with every excuse as to why I was wrong, but she had no clue. She was just taking guesses out of thin air to debate with me. I hung up on her eventually. She told me I needed to contact the legal department (lol).

Right.

As if Caesars' lawyers are going to be hard at work trying to resolve this issue. If I do speak to legal, they will give me a quick answer telling me I'm wrong, and hang up. I'm not going to bother. Lawyers don't like non-lawyers telling them they're doing things wrong (even if the non-lawyer is correct!)

Anyway, I give up.

On my next stay, I'm going to see if there's a way to swap it to an RC reservation in advance, so there's no tax charged. If there isn't, I guess I just have to eat it. Looks like I ran into a brick wall on this one.

But still... try to ask them not to charge you tax when you check out, because maybe you'll get someone helpful. But probably not. I assume the system won't let the checkout complete unless the tax is paid.

What a fail.