Can you post the model number please.
Ok thanks for this.
How the fridge get its cooling is from the freezer. There is a fan inside the freezer which blows the cold air up into the fridge section.
What you can do is either empty the freezer and from there remove the rear panel and there you will see the evaporator. Use a hair dryer and defrost it fully.
Or if you don't want to remove the panels you can empty the freezer and turn the appliance off and leave the door open for 24 hours. This will allow the ice to melt in there.
Once its defrosted retry the appliance and that should get the fridge working again. But if it goes again then theres a fault on the defrost side of the appliance. Either the defrost heater itself or the defrost thermostat.
But try defrosting it with either the hairdryer in the freezer with the rear panel removed or turn it off and that should sort it out.
If you need anymore info just get back to me.
Nice one glad to hear its sorted it and thanks for letting me know.