contract signed with them to force the execution of payment on time..in the worst case we pay them from our money and get money easily by lawyers
It seems to me that this person simply does not exist under this name. Trying to find him will cost a lot more than a criminal case against him. Just for the future, you always need to work more than escrow service on the forum. This is not the first time an attempt to work without reputable escrow from the list ends with such things.