We have used the XtraRide Platinum warranty numerous times all over the Southwest and have had excellent results. The $$$ saved by using it is more than triple what was paid for it. Sorry you didn't have a good experience, but sounds like you got a mobile tech that was either greedy, or didn't know how to work with extended warranties. I would call XtraRide direct and ask for a supervisor and an appeal.
Scott and Liz - Southern NM
2012 Wildcat Sterling 32RL - w/level up (best option ever)
2007 Chevy 2500HD 4dr short bed Duramax w/allison
Reese Fifth Airborne air ride king pin coupler with Sidewinder