Warranty Claim - Pathetic service delivery

We bought a fridge/freezer about 3.5 years ago. I paid extra for an extended warranty (Fourways branch.) A few days ago it stopped making cold and I did email the canal walk branch on Monday around 3pm with everything they requested. They phoned me and said they will send it to the Somerset West branch as they are closer to me. I phoned again today (Wednesday) and they said the call is only booked for Friday but might be able to come on Thursday if they have a cancellation. This is a urgent matter as most of the feed is starting to get rotten. If this was a TV or a microwave its a different story but why pay for extended warranty in the first place if I still have to replace everything in my fridge because the service is so pathetic? They said there's nothing they can do as this is their procedure. Really, is this the best? If nothing is done I'll never spend a cent at HiFi again because its not worth it at the end. This was the somerset west branch being not really helpful.