Turning into a bat wont help.
Check your info to make sure you are correct. You must be 100% sure that you are owed money and it is way past due. Spend today trying to contact them one last time.
If you are correct and still unable to contact them, come to GG&J and post their name and all the details. I'm sure if nothing else this will generate a response from the parties involved.
Just make sure you are in the right.