Quote Originally Posted by Susie.A View Post
I'll try that but it doesn't seem to need sharpening it's just that one side isn't cutting properly so you get a rounded corner on one side and one that starts rounded and then has a jagged edge.

Unfortunately I've already thrown away the packaging. Mind you, by the time you've got those things out of the packaging it's pretty much destroyed.
If it's faulty - which would seem to be the case from what you describe - then you are entitled to a repair, refund or replacement, regardless of whether you've kept the packaging etc.