Delivery timelines Q7 vosprung

Hi - I ordered a Q7 Vosprung 50 TDI end of June with an estimated delivery date of 25th September. The dealer called today to inform that build might only happen in December. The finance deal I have is valid till 31st December only and if delivery goes into 2021 I will have to go with a new finance deal . That would be a deal breaker for me. Dealer says that there is nothing similar in stock. Surprisingly when I contacted Audi Uk and check on Audi site, my order does not have a build week assigned so not sure why the dealer is telling me December. Anyone in a similar position or any update on delivery timelines for q7? Is it likely to take more than 6 months?

Hi, I've just ordered Q7 Vosprung 50 TDI, they were trying to sell me a used one which was 3 months old but a new one worked out cheaper. I had seen an unregistered one at Crewe Audi with exactly the same spec but then my local dealer found a new one that was about to be shipped, apparently it is waiting to be shipped over. I had been assured that it would arrive by the end of August but today have been informed that it may be early September.