sales mistake or Factory mistake

[jlforlife]

So i just figured out that my rear speakers arent loud at all so i decided to count the speakers and they are only 12 instead of 16 for premium package(2007 Canadian model)

I took it back for checking such as noise in breaking, stereo malfucntion etc. and i mentioned the speakers to them. The sales guy also confimred that the speakers doesnt match the package i paid for.

Now the question is, will they add the missing speakers or they will replace SAV?