Perhaps so, I was a bit skeptical on the part where they couldn't find his receipt. Maybe the OP didn't buy it from Apple? I bought a Macbook once and it broke down on me a year after AC ran out. Called Apple to get the receipt (they're usually tied to the serial number) because I needed to fax it to American Express. Done within a matter of minutes at the store!
Exactly! Apple Executive Relations paid for a major repair of my liquid cooled PowerMac in 2006. The liquid cooling system broke down and fried one of my two CPUs. One email to Steve Jobs and the $1,400 repair was paid-for at a local Apple shop - this was before Apple had any stores in the Phoenix area. When I later sold that PowerMac on eBay, I needed the receipt for the repair and the store that fixed it was no longer in business. One call to Apple and they emailed me the proof of repair within an hour.
There are so many inconsistencies and holes in the OP's story, and one would be required to make a huge leap in order to believe that Apple is purposely screwing this poor, innocent consumer even after escalating the issue to upper management. My take? The OP decided he wanted a new computer. Why do I think this? Simple
look at the original post. The OP's laptop was getting hot and some of the applications were taking longer to load
Hmm
looks like normal behavior on the heating front when you are doing anything that taxes the system, and the slower loading of applications could be due to any number of simple things - not enough HD capacity, a failing drive, etc.
Knowing that new machines are around the corner, the OP decides to start laying the ground work for a replacement. Repair after repair, the OP claims the computer is still running slow and hot. Well, the terms "slow" and "hot" are somewhat arbitrary, aren't they? To me they seem vague enough to allow the OP to claim, one repair after another, that the computer is not fixed. For all we know, the OP messed with his computer internally, causing Apple to cancel his AppleCare.
If Apple canceled the OP's AppleCare, I believe it has a very good reason. If the OP feels that he has been unjustly marginalized by Apple, he has many options available to remedy the situation that do NOT involve coming in here and starting a thread about how awful Apple is while at the same time only giving us half the story.