I apologies that you are waiting so long for your VAT Registration to be processed. As this is a public forum I'm unable to look into a specific application.
You would need to contact our Registration Unit via email or telephone and be persistent if they are busy.
We would recommend charging the gross value for your supplies while you are waiting for the VAT number and then reinvoice customers with the full VAT breakdown once you have your VAT number.
Please see the guidance below:
5. Accounting for VAT 5.1 Keeping records and charging VAT — when to start
I understand that the marketplace are reticent to allow companies trading via their platform to trade without a VAT number so it is imperative that you speak to us regarding this so that we can progress your application in a timely manner.