Whirlpool fridge / freezer ice and water dispenser not working?

Hi, I have a Whirlpool fridge freezer with ice and water dispenser. I had a fault back in September where the freezer stopped working. A local technician replaced the backboard. However, the ice and water have stopped working and the fridge does not set below the 5 degree default setting. The technician eventually came back and replaced the front board but this has not rectified the problem. There is a new filter fitted and at times I am able to draw a half glass of water. The front display panel shows a flashing telephone. Any help will be appreciated. Paul 1/12/2009



Optional Information:
Make: Whirlpool
Model: S20D RBB32-A/G

Already Tried:
New backboard and new front board, replaced filter.