Lousy cut, dull bllade most likely and most likely not flat if you can feel it. Overall a fail. As to why it was pieced,, no way to tell. What did the installer / fabricator use as an excuse?

That is a ROUGH seam, eugh.. There's a number of reasons seams are done (weight, relief cut) but if you were told there would be no seam, there shouldn't be one without prior discussion. Not to mention it's chipped like crazy.

" but if you were told there would be no seam "

@Cami Leyva OP did not say he was not told there would be no seam he was not told there would be a seam, meaning he was also not told there would not be a seam. The fabricator should have shown you a layout and had you sign off on it. Again, What did the installer / fabricator use as an excuse?

That's a nasty seam. They should have indexed the material into Integra Adhesives archive which would have told them the exact color adhesive to use. Too may guys just try to eye it up and fail. It could be gently heated, separated, and done over or even sawn apart.

We don't know the dimensions, but presumably there is a seam because the width of your cabinets is greater than the width of the slab.

I agree it's a horrible seam. I hope you get some satisfaction from the fabricator.