The way I understand it is that Toto is moving to the same bowl (C454CUFG) for both the 1.28 and the 1.0 on the Drake II. (There is one bowl on the original Drake now, for both the 1.6 and 1.28 tanks.)
However, if you ordered a 1.28gpf toilet, and wanted the aesthetics and performance of the tank on the 1.28 toilet,, you deserve it. If you ordered CST454CEFG, then you should get the ST454E tank and either the C454CUFG bowl or the C454CEFG bowl. The ST453U tank is expressly for the 1G version. It has different-style guts (no flapper) and looks different. If that isn't what you ordered and it isn't what you wanted, the supplier should replace it.
The 1.28 version of the toilet is definitely available, and that is the one with the ST454E tank.