Why are this seams there? I have been modeling and then I've noticed that I had a strange seam going at a certain part of my mesh, quite weird, can't figure out what is causing this to happend.
Extend those vertical edge-loops all the way through those three bottom horizontally-aligned faces (the top of those three clearly being an n-gon, not sure of the two below it). This should go a long way toward fixing your problem.