I bought electric water pump, was good for 10month...

I bought electric water pump, was good for 10months than failed. Ask for warranty. rock auto ask me to buy the new before they warranty me. Did that install part fill coolant and part failed straight. I ask for warranty again some answer buy new than warranty old(new). After all this situation buying returning I lost $200 plus labour and no one wants to compensate failure.
No trust I will buy somewhere else, they take care value customers better.