Not sure if they have ADR (like eCOGRA etc) if they do start complaint there.
If they dont have then i guess you need to write EMta license.
If none of above works then last step is small claims.
what is small claims?
However, please note that the CGA does not handle individual disputes between players and gaming operatorsI just had look at their rules,
3.5.3-3.5.6 is what you are looking for.
to put it short
You have failed to achieve outcome in live chat /
support@epicbet.com - this phase is done.
3.5.5 states if its not resolved you can escalate sending e-mail to:
complaints@epicbet.ee - im not sure if this phase is done or not as it seems they have made their final decision already but still wont harm to send e-mail there and see if its their final answer.
3.5.6 states that if you are not satisfied with outcome you can contact EMTA:
hasart@emta.ee -
i would advise to take all these steps in correct order. If all that is done and you are still not satisfied theres small claims.
Small claims is basically a court however its better you google about it yourself