Bests & Worsts Reviews from Amazon

I have still yet to use the cutting Mat because it came folded into three part leaving it warped. I assumed that it would just flatten out over time but it's been two weeks and the mat looks exactly the way I unfolded it and I did lay it on a flat surface with weights but that still didn't do the trick. I heard really good reviews about the board but I can't even use it!!!!! So how am I supposed really know how the mat works. I'm hoping I can figure out an alternative to flattening the surface because it's frustrating to not be able to work on projects. Pros: (my mat)doesn't smell Cons: warped to the 100th power