Is it possible to repair the electric cable that i cut through?

Duraplug make a two pin (orange) and a three pin (black) in line connector like this picture...

http://www.sparkyselectrical.co.uk/media/images/product_detail/591.jpg

Where can you get it repaired depends very much on where you live - ask an old retired gent and offer him the price of a couple of beers.

An old retired gent
June 2009