Should have included some bit of proof, such as those messages when you were requesting self-exclusion, when they granted it to you and when you played before the self-exclusion expired.
Just out of curiosity, which platform have you been using for ADR?
Well, that is a good point to consider. The screenshots and chat logs would certainly help people to understand the timeline better, particularly the requests for self exclusion, as well as the responses from the support, and the account being reopened before the end of the self exclusion period.
Nevertheless, if the events truly happened just the way the OP has described, the real question would be whether the casino carried out its responsible gaming duties when the player clearly told them that they wanted to take a break from gambling. I just feel that if there's a need to take it further, then good documentation will be needed.