AskGamblers Complaints Team has been provided with additional information regarding this case which gives a different perspective now for the reported issue.
Approximately a week before player registered at Next Casino, the operator had added a big informative text box, specifically dedicated to self-exclusion matters and clearly explaining that player should NOT register if he/she has self-excluded on any other site operating on the EM platform alongside with a link to the UKGC page where the player can check all the domains of any sites that operate on the EM license /see attached screenshot/. Player obviously agreed and accepted that information, otherwise registration would have never been finished successfully.
Moreover, player has been duly refunded for the amount left in their account at the time of the account closure.
And lastly, as far as we are in aware, player never filed a formal complaint in front of UKGC, obviously being well in aware such complaint could never been ruled in their favor.
Based on all the facts and details we gathered so far, AskGamblers Complaints Team consider player's claim as not a valid one and therefore the complaint is being rejected. The case is now officially closed.