Another Dealer Service Dissapointment!

[RIC-H0]

Alright...
For those of you who know me personally, y'all know how I am.
For those of y'all that don't, I don't really like to rock the boat, but will if pushed too far.
I have once again been dissapointed with with my service department here in San Antonio.
As I was replacing my tensioner pulley on my H2(that's a whole other story), I pulled off my front skid plate, and noticed that my fron diff was leaking again!
So... I take my H2 in on a friday morning, and and tell my Hummer service rep here in S.A. that my front diff is leaking again, and it needs to be fixed again! After he confirms that it's been less than 6 months since they last worked in this same problem, he agrees that it'll be covered under warranty, I also mention that my pittman and idler arm have been confirmed to be worn, and after he does not find any replacement of my pittman or idler arm, he tells me that this known problem of worn pittman/idler arm would not be covered under warranty, but he would gladly have one of his techs check them out to confirm that they are indeed bad "FOR $95"!?!?

I agree to let them work on the front diff issue, and then laugh at the fact that I don't need to pay $95 to tell me something I already know.

So, since my diff (re)work is covered under warranty, he takes me over to get me a rental vehicle, and calmly tells the rental associate "the rental vehicle doesn't have to be anything big, just whatever you've got".
Well...to make a long story longer, I end up with the crappiest rental vehicle that I've ever had.
It ends up being a Chevy Cobalt. This vehicle has got the fewest options in a rental vehicle that I've ever seen. The windows are a manual crank, the doors a manual locking, and with only 3300 miles on the vehicle, it already sounds like a production line reject.
It was my understanding, when you get warranty work done on your vehicle, you are to get a comparable vehicle as a loaner/rental. I knew it was bad, when the rental associate apologized for the size and quality of this vehicle as she handed me the keys.
I what made it harder to accept driving this vehicle was, me ex-wife had just taken in her $40k Conv Saab in for service a day earlier, and She gets a Cadillac STX, but when I take in my $65k H2 I get a Chevy Cobalt!! ((What's wrong with this picture!?))
To add more misery to this situation, I actually had plans to go out that night, but cancelled my plans, 'cause I was embarrassed to show up in a Cobalt, rather than in my H2.
Not to mention the fact that myself and my children had planned a trip to Austin on that Saturday. I ended up renting another vehicle, just so we could feel somewhat safe for the 2 hour trip.
I guess once your warranty expires, so do the perks of buying a luxury vehicle.
I'm sure if a person with a 2006 H2 were to drop off his vehicle, they would have been driving out with a nice full size Caddy or something comprable.
I know this dealership actually prides itself on it's customer service, but when a service department does something like this, it actually makes me hesitate bringing my vehicle in for any kind of service, much less for something that needs to be fixed again and again.

I apologize for the ranting, but I just had to tell someone other that the cat outside about my situation!
Thanks for listeing!

Ric-H2