Hi Heather, welcome to Casinomeister, from one Canuck to another. Sorry no one has answered you before. I meant to and forgot. First of all, I'm sorry you learned the hard way about max cashouts at RTG casinos if you use a bonus coupon. Still, if you've met the playthrough required on allowed games, then you should be paid. It sounds like you've already been in touch with Chris, their manager. He was on the forum a few days ago, posting in another thread, it was too bad that he wasn't directed here. In the future, sometimes it's helpful to put the casino name in your thread title. It tends to get a bit more attention that way. Anyway, here is a link to the manager's profile, you can try sending him a PM and see what happens (if you haven't already).
https://www.casinomeister.com/forums/members/
Make sure you direct him to this thread, and Chris, when you read this..a response would be great. You've made many replies re: the Netherlands players. This sounds like a legit case of non-payment.
If he doesn't respond Heather, I'm not sure what else you can do besides Pitch a Bitch with Bryan. You are allowed one PaB with a non-accredited casino.
In the future, if you want to play at a casino, choose one from the accredited list here. At least that way, you will have some avenue of recourse if things do go awry. And if you want to play RTG, Inetbet is tops amongst many players/posters here, including myself.
Best of luck to you, and let us know what happens.
Edited to add: Heather, I just realized that you probably PM'd this link:
https://www.casinomeister.com/forums/members/
Even though that is the one listed for Prism/Slots of Vegas, as I mentioned Chris has been on the forum and has taken over those properties. That's why I posted the other link for you, as he is the VIP Lounge manager as well. Try that link, and let us know.