Mortgage Protection Insurance
Unfortunately Appollo, you don't get the money back...It is designed to pay off your mortgage if you die, so you only need to be covered for the amount of the mortgage, not the value of the house. Also, you are legally obliged to have this insurance in place.
If you ever top up the mortgage, you would also need to increase the mortgage protection to make sure that the mortgage would be paid off if you died. Then the house would go to your estate & be sold, or whatever......depends on your circumstances.