Delivery date is not dependent upon completed payment terms. There is no escalation path.
Thats not 100% true either. Lack of completion of items in a tesla account can delay getting a vin assigned. For example, its always best to put "cash" as form of payment in the account, no matter how you intend to actually pay, so that financing does not hold up anything.
You can always switch later, and the above is what a tesla SA will tell people to do if they are asked.
Its also best to complete the profile, for the same reason... but there are WAAAAYYYY too many people out there who dont complete their profiles because they think they are going to flip their reservation, or because they just dont for some other reason.
So, A SA would tell someone the same thing I am saying right now, "complete your profile, choose cash", "ensure you have no open items waiting for you on your profile", worry about your trade in when you get closer to your delivery date because the value of your trade will change if its more than X number of days out".
Other than that, there is nothing they (an SA) can do with the question "why is my delivery date moving around?" , "Why is my car at the delivery center with no charge port?", "When will the charge port come in?" or anything like that, which is normally the genesis of questions like the OPS. Thats why I said "No one". It was based on what they posted in this thread.
Its not like I personally am down on tesla or something. I have 2 tesla vehicles, Tesla solar panels on my roof, and Tesla powerwalls in my garage (and no tesla stock). Tesla is not as bad as many people make them out to be, but I am also a realist when it comes to how they operate in many ways. One of those ways is, the SAs really dont have much more information than we do in the app for anything related to car delivery.
If you happen to get a "seasoned" one on the line, they may have some legacy access that others dont have to see some data that is not provided to SAs in general anymore, which is why so many people will get told by one SA "We have no idea" and another one might say "I see here in the system XXXXX" In neither case can they do anything about moving dates though.
Its just one of those things people have to deal with.