Hey man, Rolletto casino is licensed by the Curaçao eGaming provider. So you can make a complaint by addressing at license provider. Follow these steps:
Go to Rolletto casino page, scroll to the bottom.
Find the Curacao E-gaming logo(it looks like a shield)
Click on it, and you will be redirected to the license verification page.
Scroll down, and you will see the empty fields and a green button *Submit a complaint*
Introduce all information required and describe in detail that is the issue.
I hope it will help you solve the problem with Rolleto casino! For the future, if you decide to play at an online casino, you can check this source
https://www.pick7.bet/casinos-not-on-gamstop/ to find good and trustworthy casinos to exclude the situations that happened with Rollette casino.