Shelia
I'm sure you will find the element in the top of the freezer has frosted up. Look through the grill vents if you see white snow like frost it has. What will happen id that the circulation fan will stop operating due to frost build up and the cold air won't circulate properly.
You need to defost the freezer which is odd 'cos it's a frost free freezer.
the normal causes of this are, overfilling of the fridge. Blocking the air circulation ways that is the area underneath the bottom drawer and broken fronts to the shelf drawers.
I have to do mine about two times a year 'cos the wife overfills it and has broken half the plastic shelf fronts.
If you can't hear the fan circulating this is most lightly the problem.
ray
Ray Proctor
May 2009