So, I hate to break this to you, but one of the most successful games in all of the Battlefield franchises was Battlefield 2142 and that had no campaign or story mode whatsoever. Battlefield 2 did not either. Battlefield Hardline, is technically the WORST and not a part of the franchise. Dice did not make it. I cringe every time someone includes it with the rest of the Battlefields.
Now, just because you've talked to support and they said they are going to "pass" your idea on to the developers doesn't mean they necessarily will. What they're doing is just common consumer interaction replies. The game has already been revealed, shown to E3, being shown at the EA showcase on July 22, going to a closed and open beta phase soon after that and then an early release for preorders and an official release on October 22, 2012. That's about 105 days away. If there were going to be any type of single player or a campaign or war stories in it, it would already have it.
Instead, BF2042 takes place 22 years after BF4. The story you're looking for will be in the lore throughout the game. Through tidbits you unlock, areas you find in multiplayer maps, etc. etc. That's how it's generally been done in nearly all of the battlefields. Battlefield thrives on pvp. It is meant to be a pvp game. It introduced 32v32 all out warfare on large maps and turned FPSs into a literal playground. And now, for next gen consoles and PCs, we're going up from 32v32 to 64v64 all out warfare.
Based on your sentence structure and grammar, I can tell that English isn't your primary language. And you've repeated yourself quite a bit. I understand your frustration with this not having a campaign. Battlefield might not be your type of franchise. Halo might be more your thing.