This ID Number is already registered in our database.

I have previously had an account on Pnet and removed it. Now that I want to create a new one I only get an error stating that my ID number is already on their database so I cannot create a new account. Sadly this field is a required field so it cannot be left out. I have logged this about 2 months ago via email with there support team. I have received an automated email with my case number, but 2 months later I still have not received ANY feedback even though I have done a follow-up.! No service received, still struggling