Not saying that you did any of these, but there are several causes of electric motor failures that have nothing to do with the motor:
* poor ventilation , high heat
* high humidity
* dusty environment
* power surges, low voltage
For you the motor failed, not the pump, so its not all bad.
A motor is a motor is a motor, no one gets dealt nothing but aces.
pick up and move on, if the supplier did not stand behind their warranty, that is one thing.
To expect kingly treatment just because you buy their product, probably won't go far unless you are a commercial account and have a corporate purchasing relationship.
As mentioned in a previous post, I would go as far as verifying that the motor that came with the unit was sized properly and should have been a match to the load of the pump. If the compressor was not built properly, then you have something to go with. If the motor was the right one, just buy a replacement motor and the extended warranty.
