I had a brand new Olfa mat that started to peel. The green surface was coming off in strips leaving a solid white mat underneath. I took pictures and posted them on the board. Olfa customer service said I was cutting too hard. LOL. Ofla did send me a new mat after I posted the messed up mat here. I've never seen a mat do that before. I'll try and find the post.
Found it:
http://www.quiltingboard.com/main-f1...at-t33840.html I posted the email I received from Olfa about the mat.