I'm not sure if you'll get the possible solution you seek from this blank complain because how on earth do you expect people to give you solutions when you didn't even mention the name of the competition or even show proves to your claims.
Now let me advise that it will be better if you try getting in touch with organizers of this competition which you said you already did and if there isn't no respond after sever attempt, then you should atleast let people know of the name of the competition so as to help tag it a scam to avoid others from falling into similar situations.
I will be glad if the thread is updated frequently so as to keep the community and forum aware of the situation.
Goodluck.
It is the same concern I also stated in my previous comment, but i sense that maybe op is not good with English and as a result, lack the proper English words to really express himself by explaining the situation in full details, but then, what ever be his or her reason for an incomplete complaint, the fact like you said, remains that there is no way we could help as a community, and for the fact he didn't even mention the casino or platform that organized the said competition or contest is another barrier altogether..
Anyways, let's hope he comes back with more detailed report of the his situation.