We had a minor problem with the light not always going off in our LG refrigerator. However, I had the extended warranty and it was covered by that.
There was an authorized repair person that came out from Calgary, but I forget the name of the company he worked for and I dont have a bill since I never had to pay for the repair!!!
And he did order in the required part, so I know that company can get in LG parts.
Our repair was covered by w3solutions, that is the extended warranty company. Perhaps try contacting them? or ask a question of them on line?
http://www.thew3solution.com/
1-877-999-1915 is their toll free number.
Failing that, call Rundle appliances. If they cant fix it, they will probably refer you to someone who can.
403-250-7247