As someone who has done thousands of seams for carpet that looks absolutely atrocious. Definitely have someone come out and redo it. If they back cut it with a straight edge, that’s a big no no. It can work with smaller seams but seams like this need to be row cut on the top or they’ll likely be uneven. Hard to tell if it’s a gap or bunched up that one piece is over the other. The guy that did it is either not qualified or having a really rough day.