Latest Update: Seems there may not be much to say for awhile now. I keep getting automated emails asking if I still need help from EA (obviously, yes, so stop trying to close the case with no resolution), so I requested a call back yesterday (it'd been the requested 5 business days anyway). I was told that they have started looking into my case and are going to force finish the quest. I find this highly suspicious given that the tech team member basically just regurgitated what I said (with no specifics) and had me on hold for a pretty long time for such a generic response. Per usual, she didn't want to give me any estimate of a completion date but finally said 2-3 days.
Hours later, I just received an email from David M claiming that a specialist named Luca has forwarded my case to the Product Experts (what a joke of a name: "experts") who are "in direct communication with the studios." The email also says "You should receive a response in a the next 7 days." (His typo, not mine.) The continued stretching of the timeline (from same day, to 72 hours, to 5 business days, to 2-3 more days, to the next 7 days) makes even less confident in their technical support for a known issue that they have previously fixed for others (but clearly not in a way that's resulted in training of the whole team).
Who else fully believes that 7 days from now I'll be no closer to seeing this case resolved (either by getting the quest triggered or getting SSB as a playable character)?
Does anyone know of a customer service number where I can actually lodge a complaint about this?