Before we came to a conclusion, Let's wait for PlayBetr as they are not inactive. Their last login was on March 13th. I just sent them a Private message and invited them to this thread. They will receive an email from the Bitcointalk forum about the new private message they received. PlayBetr has a reputation. But, Considering the amount, I have some questions about their action. OP has some good points and I pointed out it as well. I hope they will come and reply to those questions. Meanwhile, I will ask OP to contact another mediator service for assistance.