Did you try start the car with the coolant frozen? You may have wrecked your water pump
Don't forget to have heater switched to max heat also (although I'm not sure if Punto is flat actuated, or value), but always a good thing to do anyways
Surprised you havent taken the belt out as well!!
Ziggy
Car is now fixed... As you can tell by the photo it was the water pump ... The impeller came out in 13 pieces!
Thatnks for all your help guys!