Xbox Series X Order

Not only did everywhere sell out within minutes. Nuts. But I finally got xbox to work, well "work" is generous. Took minutes to load each page finally got it to final steps for billing. I checked the box that says use shipping address as billing. Then
it had my old card defaulted. Switched to my new card and it must have switch my billing address. Didn't notice until after I purchased. I have been on hold for 50 minutes now. Is there a way I can correct this without my order being cancelled and not pre
ordering new xbox?

:)