I have a 2003 protege, which I have had dealer serviced at the Mazda
dealership I purchased it from (call them Dealer A).  I have agreed to all
service they have recommended, which on my last couple visits has run into a
substantial sum of money as my mileage approached 40K.  This year they have
replaced front brake pads, adjusted rear ones, done a transmission flush and
replaced spark plugs and pcv valve in additional to oil changes.  I have no
interest in cars, they only serve to get me where I'm going and am not
particularly interested in doing even simple maintenance like oil and spark
plug changes.

For my most recent oil change, I decided to try a different Mazda dealership
(call them Dealer B.)  Since Dealer A had done quite a bit of work on my
previous two visits, I wasn't expecting to need anything else besides the
oil change.  However, they informed me that the pcv valve needed to be
replaced.  I told them that dealer A replaced it just two months earlier and
showed them the documentation.  The service manager told me that while
dealer A may have charged me for it, the valve wasn't replaced any time
recently and needed to be.  I declined their offer to change it.

I returned my car to Dealer A and told them what Dealer B told me about the
pcv valve.  They inspected it, assured me the valve had been replaced and is
fine and that Dealer B "most likely was trying to upsell me service based on
my mileage without inspecting the valve."

Any suggestions on whether I should take this up with Mazda?  Frankly, this
incident makes me not want to purchase another one.