Bust Buy Worst service ever Minneapolis, Minnesota

Purchased refrigerator with extended warranty. Contract has provision for replacement after 3 service calls. Since purchasing we have had to have the unit repaired more than a half dozen times. This time when we scheduled a service call after the customer service agent insisted that we had to prove that the service calls had happened, a supervisor named Nathan got on the phone and assured us that a technician would come out today (3/16/2011) and confirm that the unit was broken and Best Buy would replace the unit at fair market value. The appt. was scheduled for 8:00 a.m. to 12:00 p.m. The technican called this morning confirming a repair (not replacement) appt. for 2-4. We have been unable to resolve this issue with Best Buy. They acknowledge that there have been many service calls but insist that they do not have to replace the unit. Other than just the inconvenience of not having a working refrigerator with 9 people living here, we have incurred hundreds of dollars in spoiled food.
And please visit the site http://apps.ihatebestbuy.com/blog/