Just wanted to provide update for everyone still waiting on the credit-- Apologies for delay!
On delivery day the error was not automatically corrected and the Service Advisor had to initiate a ticket for the credit to be removed from my account. The credit was applied approximately 30 mins before my scheduled delivery date/time however, I am unsure if this is universally the case. The balance remaining became 0 and I was able to unlock the vehicle via Tesla app on delivery date. One issue that I have is Delivery Declaration is not able to be viewed online under my vehicle's contracts and agreement tab, provides an HTML error.
@TProfit I do not see NJ sales tax listed added to my motor vehicle purchase agreement and was not charged for tax. I can confirm that tax was not charged at time of sale either.